How To Use Co2 With A Grow Tent

The Importance of Adding CO2 to your Grow Room

It is carbon dioxide, or CO2, that humans exhale when we breathe and that plants utilize to activate photosynthetic operations. At night, plants really “breathe out” CO2, but during the day, they “breathe in.” Typical ambient room CO2 levels range between 300 and 400 parts per million (ppm). CO2 levels are measured in parts per million (parts per million). You should be able to meet the 390 PPM atmospheric requirement in your grow room, if you have adequate circulation in your growing environment.

Your plants will cease growing if the CO2 levels fall below 200 parts per million (PPM).

If everything is done perfectly and you have a well-tuned system, CO2 may make a significant impact in your yields if done correctly.

If you want to shorten the time it takes for your crops to grow, consider increasing the amount of CO2 in your grow room.

At 1,500 PPM, growers have witnessed an increase in growth rates of up to 100 percent, according to the research.

The Benefits of Adding CO2 to your Grow Room

When it comes to your plants, the most essential and immediately noticeable advantage is the huge boost in growth that will occur, especially if the potential of your setup has already been realized. Additionally, if CO2 levels can be kept between 1000 and 1200 parts per million (ppm), you will be able to operate your grow room at a more comfortable temperature. Growers are always battling to keep temperatures down and minimize temperature stress on their plants, so this may be quite useful information.

CO2 During Vegetation

Adding CO2 during the vegetative growing stage is the most effective strategy to boost the rate at which your plants stretch, allowing your plant to expand with far more vegetative growth in a significantly shorter period of time.

CO2 During Flowering

The blooming stage is the most critical stage to consider when adding CO2 to your grow environment. When CO2 is introduced into a grow room, especially during the first two to three weeks of blooming, it can greatly increase flower output as well as blossom size.

How to Add CO2 to your Grow Room

Exhale CO2 bags are the most natural and straightforward method of supplying CO2 to your grow environment. The Exhale CO2 bag cultivates carbon dioxide 24 hours a day, seven days a week, without the requirement for refill bottles or the utilization of expensive manufacturing equipment. They function as a result of photosynthesis, which is the mechanism through which plant leaves convert sunlight into carbohydrates. The function of chlorophyll in the chloroplasts of the plant converts sunlight, carbon dioxide, and water into carbohydrates and oxygen for the benefit of the plant.

When plants are able to maximize the process of photosynthesis, the consequence is bigger plants that produce higher yields than when they are not.

During the growing season, this mycelial mass produces carbon dioxide, and the one-way breather patch may continuously release CO2 for up to 6 months.

Because CO2 is heavier than air, it’s important to remember to hang the exhale CO2 bag at the top of the grow chamber in order to spray a shower of CO2 over your plants during the growing process.

Can I Use CO2 in My Grow Tent?

One of the most advantageous aspects of indoor cannabis farming is the degree of control you have over the atmosphere. For critical components that plants rely on for development — such as light and CO2 for photosynthesis — this is particularly true. However, while tent growing is incredibly handy due to the simplicity with which it can be set up, the technique provides less versatility in terms of equipment selection than standard growrooms. In general, growrooms can contain more equipment options than tents since they are constructed with solid walls and are capable of being raised up to any desired size.

The use of CO 2enrichment in grow tents is becoming increasingly popular among farmers as a technique of increasing optimal CO 2 levels in the environment.

What is the Benefit of CO 2?

When it comes to proper photosynthesis in cannabis plants, carbon dioxide is a vital component. According to the Ontario Ministry of Agriculture, Food, and Rural Affairs, “photosynthesis is a chemical process in which carbon dioxide and water are converted into sugars in green plants by the action of light energy.” “Through respiration, these sugars are subsequently utilised to fuel the development of the plant inside.” For this reason, maintaining the appropriate amounts of CO 2 in your growroom might be important for producing significant harvests.

Studies have also shown that maintaining CO 2 levels near 1,000 parts per million (ppm) in your growroom can increase photosynthetic rates by as much as 50% compared to gardens that do not have CO 2 enrichment.

Challenges of Using CO 2in a Grow Tent

For cannabis plants to successfully photosynthesise, carbon dioxide is an essential component. In green plants, photosynthesis is defined as a chemical process that uses light energy to transform carbon dioxide and water into sugars. This definition is provided by the Ontario Ministry of Agriculture, Food, and Rural Affairs. As a result of respiration, the sugars are utilised to fuel the development of the plant. Because of this, maintaining the appropriate amounts of CO 2 in your growroom might be important for producing significant yields.

CO 2Burners

The combustion of a combustible fuel such as propane allows carbon dioxide to be released into a garden using carbon dioxide burners. When the propane combusts, it releases carbon, hydrogen, and oxygen, resulting in the formation of CO2. CO 2burners are popular among growers largely because propane is more readily available than CO 2tanks.

Importantly, CO 2burners are equipped with atmospheric sensors that provide relay signals to exhaust fans, allowing them to operate more efficiently. As soon as the temperature and humidity in a growroom reach a specified level, the exhaust fan is turned off and the burner is turned on.

CO 2Burners and Tent Growing

Despite the fact that CO 2burners are reasonably simple to use, they are not advised for tent farming. This is mostly due to the fact that these systems operate with an open flame and generate a great volume of heat. Furthermore, the heat generated by CO 2burners will raise the temperature of the interior of the grow tent above the permitted range for cannabis production, creating a potential fire danger.

CO 2Tank and Regulator Systems

Despite the fact that CO 2burners are reasonably simple to use, they are not advised for tent cultivation. Because these systems operate with an open flame and generate a significant amount of heat, they are not recommended for use in enclosed environments. Furthermore, the heat generated by CO 2burners will raise the temperature of the inside of the grow tent above the allowed range for cannabis production, posing a fire threat in the process.

CO 2Tanks and Tent Growing

Despite the fact that they are safe and logistically possible, CO 2tank and regulator systems might take up important growing space in your grow tent. As a result, due to the limited square footage of tents, these technologies may not be feasible in all configurations. Take a look at these other resources:

  • Several tips and tricks for properly sealing your growroom are provided. How to Make Your Grow Room’s Ventilation System Even Better. What Are the Advantages of Using CO2 During the Cloning Stage?

CO 2Bags

In the world of indoor gardening, carbon dioxide bags are a relatively new product that has recently entered the market. Manufacturers have created mycelium that emits CO2 as it develops in order to use in these items. This mycelium (the subterranean root-like material produced by mushrooms) may be placed inside a bag and used to enrich CO2 in an organic and cost-effective manner. CO 2bags are an attractive choice for amateur gardeners with modest operations who want to experiment with CO2. Not only are they exceedingly tiny, but they also do not necessitate the acquisition of new equipment, unlike more traditional ways of CO 2enrichment, which do.

CO 2Bags and Tent Growing

If the scale and breadth of your operation allow it, CO 2bags might be a fantastic solution for tent growing operations. They take up very little room, are completely safe to use, and produce no heat at all. Please keep in mind that CO 2bags cannot be used in conjunction with CO 2meters or exhaust relay switches. As a result, they require manual labor to be required for CO2 enrichment in tents, which is expensive. It should be no problem, but, if you have a little home cannabis plant, to physically switch off the exhaust and manually inject CO 2 to your tent using a bag should not be an issue.

Summary: Is it a Good Idea to Use CO 2in My Grow Tent?

While tent cultivation has expanded in popularity over the last several years, we are still learning about the many thresholds that apply to this new sort of growth technique. Growers will continue to push the boundaries of what is feasible in grow tents as their knowledge and experience grows. While it is undeniable that CO 2 enrichment may dramatically increase the yield of cannabis, many people are still debating whether or not utilizing CO 2 in grow tents is a wise investment. If you’re thinking about utilizing CO 2 enrichment in a tent, it’s a good idea to invest in one of the higher-quality types available today.

  • For example, AC Infinity Cloudlab Grow Tents are constructed of the thickest 2000D oxford fabric with an interior light proofing layer and steel poles with a 150 lb.
  • These tents will guarantee that your equipment is protected while also keeping CO2 levels under control.
  • CO 2bags are the most suitable solution for grow tents due to safety issues with tank and regulator systems.
  • AC Infinity is the most recognized name in air delivery systems, having designed and developed the most cutting-edge breakthroughs in cooling and ventilation technology throughout the years.

They provide a range of inline fans that are both silent and efficient, and which automate the growth process and track crucial data. For additional information, please see or contact us.

CO2 and You: The Benefits of Adding Carbon Dioxide To Your Grow

According to my research, there are two primary advantages to employing CO2 in your indoor garden: increased yield and quicker growth. As an additional explanation, plants always have a certain amount of moisture and energy stored in their leaves. Carbon dioxide (CO2) assists in the extraction of that moisture and energy, allowing your plants to grow. Most growers think that accessing that stored energy will result in an increase in yield of around 20-30 percent, as well as an improvement in growth pace of at least 15 percent.

What is Carbon Dioxide (CO2)?

Plants breathe in a manner distinct from that of humans and other animals. In contrast to mammals, which take in oxygen and exhale carbon dioxide (CO2), plants do the polar opposite. This is one of the most significant reasons why plant life is such a vital component of the Earth’s ecology. CO2 levels would reach stifling levels in an exceptionally short period of time if plants were not there. CO2 is utilized by plants for growth since it is required for photosynthesis, along with light and water, in order for plants to develop.

Being aware of this is incredibly significant since the notion that increased CO2 intake can speed up plant development is supported by scientific evidence.

What do I need to know before adding Co2 to my grow?

CO2 will raise the humidity of your growing environment, which will result in the production of additional wetness. The more moisture you have in your grow, the greater the likelihood that fungus and rot will develop in your garden. A poisonous environment for both your plants and yourself can be created if your CO2 emissions are left unchecked, as previously stated. The presence of more than 2000ppm of CO2 can cause your plants to die, and levels higher than that can make breathing unhealthy for people and other animals.

  1. Consider the following scenario: you have six plants growing in your dressing and no artificial or natural ventilation is available.
  2. When the CO2 supply is depleted, the plants’ growth will come to an abrupt halt.
  3. To avoid these problems, you’ll need to keep your ppm levels under control by venting your grow.
  4. Fans and ducting will be required for proper ventilation.
  5. Another option is to utilize in-line fans that link directly to the ducting and exhaust the air out of your garden through exhaust ports in your yard.
  6. The problem is that when you vent your grow, there is a chance that the copious natural oxygen in your growing environment could overcome the Co2 and leave it ineffective, which is dangerous.
  7. The increased CO2 you’re providing your plants will accelerate the rate at which your plants will develop.
  8. Increased energy will result in greater temperatures in your growing environment.
  9. For example, if you’re using high-intensity discharge (HID) bulbs (such as high-pressure sodium and high-pressure mercury) in your grow lamp system, you’ll need to ventilate the space to keep it cool because HID lights release a lot of energy and heat.

With LEDs, on the other hand, you will not have to worry about the heat as much, but you will still need to ventilate your growing room in order to keep the ppm levels under control.

What does Carbon Dioxide do for your plants?

When used properly, CO2 may speed up and enhance the yield of your grow operation. With that level of speed, you’ll be able to harvest more crops every year, resulting in larger and higher yields without needing to wait for a dry spell. When a grow is able to make use of CO2, the moisture content of the grow is increased, and the plants’ overall resilience is increased. Plants can normally only live in temperatures below 70 degrees Fahrenheit, thus when maintained with Co2, plants will not dry out as quickly.

You may use a CO2 regulator coupled to a can of CO2 or a CO2 generator to augment the CO2 in your indoor farm’s atmosphere.

Researchers demonstrated that increasing and sustaining CO2 levels beyond 1 200 parts per million (PPM) can result in an increase in growth rates of up to 20% and an increase in size of up to 30%.

Using CO2 in Your Grow Room

As previously said, CO2 is heavier than oxygen, therefore bear in mind that CO2 will need to “rain” down on your plants in order for them to thrive. That being stated, there are three primary methods of introducing CO2 into your grow: a regulated tank of CO2 (regulated by a device such as ourCo2 Regulator), a natural supply of CO2, such as ourEZ-Co2Bag, or propane/natural gas burners. Generators of CO2 in the Natural Environment For smaller grows, natural CO2 sources such as EZ CO2 bags or DIY CO2 generators (such as a bubbler in one bottle of water producing and transmitting CO2 to another bottle for usage) are ideal.

  1. These CO2 sources, on the other hand, do not provide extensive coverage.
  2. The use of these products is advised for smaller grow rooms like as grow tents and closets.
  3. CO2 tank that has been regulated If you decide to go this route, keep in mind that you can get canned CO2 at most hydroponic retailers.
  4. All you have to do is set the required flow rate (measured in cubic feet per minute) and the timer to raise the CO2 levels to the appropriate level as soon as possible.
  5. It is advantageous to use CO2 tanks because, depending on their size and your regulator, you may stroll around your grow and manually fill the whole grow area with CO2.
  6. Using them is also somewhat less dangerous than using CO2 generators and burners.
  7. CO2 and water are produced as byproducts of this process (humidity).
  8. Most of the time, these generators are designed to create as little heat as possible while also producing the greatest amount of CO2.
  9. It takes approximately one CFH to elevate the CO2 density in a conventional 10-by-10-by-8-foot space with a normal 350 PPM of CO2 density to a level of 1,500 PPM.
  10. Smaller, more precisely regulated burners are necessary to maintain the desired levels.

Here are some examples of what our store has to offer: The Gro1 CO2 Regulator costs $99.95, whereas EZ CO2 Homegrown CO2 is $32.95 per kilogram.

Applying CO2 in Your Grow Room

You can supplement carbon dioxide in your garden because there won’t be an abundance of it in your grow room due to the lack of natural sources of the gas. If you’re ready to utilize it, start by purchasing a CO2 meter that can measure the part per million (PPM) content of CO2 in the air in your grow room’s environment. Maintaining CO2 levels between 1200 and 1500 parts per million (PPM) is excellent, but with increasing CO2 levels in the atmosphere, you’ll want to raise your temps. Maintaining temperatures in the mid-’70s (21°C) to low-’80s (26°C) will not yield significant results since your plants require the capacity to take in, digest, and expel whatever they are consuming.

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Don’t be shocked if your plants require temperatures between 85 and 95 degrees Fahrenheit (29 and 35 degrees Celsius) in order to adequately assimilate light and nutrients.

A further benefit of lowering the PPM is that it reduces the average-to-maximum temperature range.

How you give your garden CO2 will determine how simple it will be to regulate:

Since CO2 burners may be programmed to refill levels even when they are not in use, all that is required to bring levels down is opening a window, venting the room or turning on a duct fan to draw the air out. In order to be successful when walking around with a CO2 tank, you must keep an eye on your meter and ensure that CO2 is released when the levels are low. If you accidentally spray a bit too much, simply turn on a fan or open a window and you’ll be good. When it comes to CO2 bags, it is important not to squander any CO2.

Using tiny blade fans in the bottom corner of your growing room will ensure that CO2 remains in the air under these circumstances.

Overall, CO2 will result in larger, better-yielding crops, as well as greater yields every year.

Your ppm level should be between 1000 and 1500 by venting your system, and you’ll want to make sure that your water and light levels are always within range of 1000-1500 as well.

CO2 Ventilation for the Growing Season ⋆ HTG Supply

Dr. E.R. Myers, a plant scientist, has published a series of articles for HTGSupply in which this article is included. A multi-part series on plant development and liming variables is being presented here, the sixth installment (view other articles in this series). Carbon and ventilation will be discussed this month, and temperature and water will be discussed next month to bring the sequence of limiting variables to a close. As you are aware, the most essential item to consider when evaluating plant development is knowing the variables that restrict growth.

  • To develop more effectively, identify your growth limiting issue, which can enhance growth, sometimes drastically, without the need to make any adjustments or do any other actions.
  • 1.
  • Increasing the amount of CO in the air Other effects of airflow on plants are discussed in detail in Chapter 23.
  • Carbon dioxide augmentation in the indoor environment How much CO2 to put to your grow room is question number five.
  • As you may have learned from earlier articles, carbon dioxide (CO2) is required for plants to carry out photosynthesis.
  • It is a passive process, which means that the plants can only absorb the CO2 that is present in their immediate surroundings.
  • Stomata open and close in reaction to the physiology of the plant as well as to environmental conditions.

Indoor growers should be aware that dust and other particulate matter can clog stomata, causing them to close.

Use just enough mist to cause the water to condense on the leaves and run off.

This should be carried out during the vegetative growth stage.

Powdery mildew and other fungal infections can occur as a result of high humidity and misting plants.

I am confident that you are aware that water and electricity do not mix.

LIGHT BULB (e.g., MH Metal Halide or HPS High Pressure Sodium bulbs), as this could cause the bulb to crack or break.

The purpose of these protuberances is to trap air around the plant and create a microenvironment.

In the natural environment, wind is responsible for replenishing this microenvironment on a regular basis.

If the air around the plant is not moving, the rate of growth will be slowed when there is a lack of CO2.

CO2 production is aided by increased airflow.

When adding light airflow to a grow area, CO2 input will increase, and it is possible that H2O output will increase as well.

Even with a fan, experienced growers are aware that CO2 may be a limiting factor in their operations.

I’ve worked in greenhouses all of my life, and every one of them had some form of ventilation or air exchange with the outdoors.

Because ventilation may provide new CO2, it appears to be a smart idea, and it may well be so.

(Keep an eye out for future posts on pests.) If you are venting to the outdoors, you should always screen the air intake and exhaust to prevent contamination.

This protects the plants from the heat generated by my HID bulb, promotes CO2 production through increased ventilation, and also helps to keep mold spore levels down.

When it comes to airflow, like with any element, it is important to remember that too much of a good thing is not a good thing.

Your plants should quiver in the breeze rather than being blown over.

Increase CO2 and O2 exchange by using a fan to create a mild wind.

The high air flow has caused “wind burn” on the leaves of some plants that have been positioned too close to circulation fans.

Other effects of airflow on plants can be seen.

The wind generates microscopic rips in the stem, which are then mended, resulting in a stronger stem.

The absence of most environmental pressures is beneficial to indoor plants, however the absence of needing to deal with wind stress leads in weak stems.

Mechanical stress may be applied to plants in a variety of ways, including shaking them or using a fan to gently blow on them.

In the natural, having shorter and thicker stems makes the plants more robust, allowing them to better withstand wind damage.

I always use a modest circulation fan on early seedlings to help them grow strong stems and grow faster.

Carbon dioxide replenishment in the indoor environment CO2 is frequently a limiting factor before nutrition.

(See CO2 Systems for further information.) If you need to ventilate your grow room, only do it after your CO2 system is turned off, and be sure to let the plants to soak up the CO2 for a few minutes afterward.

(For further information, see Environmental Controls.) It may be possible to utilize a carbon filter to keep fungus spores and bacteria at bay in bigger spaces, and you may not even need to air the area, resulting in a self-contained high CO2 chamber.

According to the United Nations Environment Programme, normal atmospheric CO2 levels (in the air) range between 300 and 500 parts per million, depending on where you live (urban or rural), with an average of 387 parts per million.

In other words, plants that receive plenty of light and water will develop more quickly when CO2 levels in the atmosphere rise.

To achieve these levels of PPM in your growing area, you should add more CO2 to the growth area; maintaining these levels is simple with a Digital Controller.

Leaving CO2 at the soil level may cause it to flow out of your room, making it unavailable to your plants.

Using a tank and many irrigation hoses, you may have one hose positioned directly above each individual plant for irrigation.

If you only have one hose, you can string it above the plants and poke small holes in the tubing to allow the CO2 to seep out over the entire plant.

An simpler, but LESS EFFICIENT, option is to place a single hose behind a fan and distribute the CO2 throughout the region over which the fan blows, although this is less efficient.

The greater the rate at which CO2 departs the growing region, the less efficient the system will be.

I appreciate the urge to use organic or recycled CO2, and honestly, any increase in CO2 should result in an increase in the pace at which your plants grow in your environment.

If heat is not an issue in your grow area, you could even use a gas or kerosene space heater to keep things warm.

The combustion of fossil fuels results in the release of CO2 and water vapor as a result of the combustion process.

View the CO2 Regulator and Tank Combo in action.

A good heater should not produce any residue or carbon monoxide (CO), which is a poisonous gas that should be avoided at all costs.

If you use a fossil fuel heater to add CO2, you should be sure to ventilate the room before entering it for your own safety.

Even though I haven’t tried items like CO2 boost (which is just sugar and yeast combined to make CO2), I assume they will add CO2 to the mix, however I’m not sure how long the CO2 will last once it’s been formed.

You should utilize a CO2 tank with a CO2 regulator and release the appropriate quantity of CO2 into your room at the appropriate time, in my opinion.

How much CO2 should you put in your grow room?

If you raise the amount of CO2 in your room’s environment to 0.2 percent of the total atmosphere, the result is 2000 parts per million (ppm).

Determine the size of your room in order to accomplish this (length x width x height).

Example: If your room is 5 feet by 5 feet and has a height of 8 feet, the volume of the room is 175 cubic feet (5x5x8=175), and 175 x 0.002 = 0.35 You must discharge 0.35 cubic feet of CO2 into the room in order to be successful.

If the flow rate is 10 cubic feet per hour, divide 0.35 by 10 to get 0.035 hours, or (0.035x60min/hour) 2.1 minutes per hour if the flow rate is 60 minutes per hour (two minutes) That is a small amount of CO2 to emit in exchange for a possible doubling of yield.

As you are well aware, providing your plants with excessive CO2 will not result in increased growth.

Carbon dioxide is not hazardous to plants, therefore if you are unable to be accurate, err on the side of caution and overestimate the amount.

Higher levels of exposure can result in unconsciousness or death within minutes of being exposed to them.

High levels of CO2 for people are greater than 2 percent, but what I am presenting for your plants, a significant increase in yields with CO2 at 0.2 percent, is not even near to that kind of concentration.

SmartBee Controllers are an excellent technique to regulate CO2 levels in the grow room environment.

So go ahead and get that CO2 tank and regulator or CO2 generator, and then shoot me an email at: [email protected] with your questions.

It’s always interesting to learn about your adventures. Thank you for your efforts in growing. Dr. E.R. Myers is a physician who practices in the United States.

[How-to] Increase Cannabis Yields by Adding CO2 to Your Grow Room

Dr. E.R. Myers, a plant biologist, has written a series of articles for HTGSupply, which you can find here. A multi-part series on plant growth and liming factors is being presented here (view other articles in this series). My limiting factors series will come to a close next month with a discussion of temperature and water, which will take place this month. When it comes to plant growth, understanding the factors that restrict growth are critical, as you are aware. Growth of plants is governed by limiting factors; plants that do not receive enough of any one (1) factor will not grow at their maximum rate regardless of how much of any other factor is provided to them.

Several major factors, listed in descending order of importance, can inhibit plant growth.


Increasing the amount of CO in the air Aspects of airflow that have an impact on plants that are not mentioned above Supplementing CO2 indoors is another option.

Take-up of carbon dioxide Energy from the sun plus 6CO2 plus 6H20 —C6H1206 + 6 02 — Although everyone considers the importance of light and water when it comes to plant growth, one element that is often overlooked is carbon dioxide, which is an invisible, colorless, odorless gas that is essential for healthy plant growth and is relatively simple to incorporate into an indoor garden.

  1. Stomata, or tiny holes/pores in the leaves, allow carbon dioxide to diffuse (move) into the plant.
  2. For CO2 to enter the plant, the stomata must be open.
  3. If something prevents the stomata from opening, the rate of photosynthesis will slow and eventually cease as CO2 becomes a limiting factor.
  4. The top and bottom of the leaves of your plants should be misted with water on a regular basis (monthly or more frequently if there is smoke or dust in the room) (especially the bottom of leaves where in many plants the majority of stomata are located).
  5. When the mist falls on the leaf surface, it acts similarly to rain in that it removes dirt and cleans the stoma.
  6. It is not recommended to mist the plants once the flowers have begun to bloom if you are growing fruit or flowers that are susceptible to mold.
  7. In order for the light to help dry the plant leaves, you should mist the plants at the start of each light cycle.
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Be careful not to get any moisture or mist on an H.I.D.

Despite the fact that you cannot see individual stomata with the naked eye, most plants have tiny “hairs” on their stems and/or leaves if you look closely enough at them.

Trapped air is typically warmer and more humid than the surrounding air, which is why they are used.

As the plant consumes the CO2 from this microenvironment, the availability of CO2 can quickly become depleted if there is no circulation of air.

When it comes to moving air around the plants, I recommend using a circulation fan of some sort.

Increasing CO2 input and possibly increasing H2O output will occur as a result of the addition of a fan to the grow area, so hydroponics growers should pay close attention to the reservoir when making the addition.

The proper use of a CO2 release system can result in significant increases in yields when the CO2 is increased in large quantities (see below) It is recommended that you use a fan to circulate air around the bulb and plants if you are using a high-intensity discharge lamp (HID), and that you ventilate your grow area to remove heat.

  1. Heat and moisture generated by the lights and plants needed to be removed, and ventilation was required.
  2. If you do bring in air from the outside, or even if you pump hot air from the outside, keep in mind that you run the risk of bringing pests into your garden, which can be disastrous.
  3. Currently, I’m utilizing a carbon filter and fan combination (see: Carbon Filters) The outflow air is routed through a flexible duct that crosses the bulb and the plants’ tops in order to circulate the air throughout the room.
  4. If you are growing fruits that require pollination or if you do not want pollen in the room, keep in mind that a carbon filter can significantly reduce pollen.
  5. Wind has the potential to cause stress to your plant.
  6. The use of a timer allows you to control the amount of time the wind (fan) is affecting the plants.
  7. This will help your plants’ photosynthesis rate and yield by increasing the amount of oxygen they get.

The excessive air flow has damaged the leaves of the plants.

When the wind blows, it causes tiny tears in the stem that are repaired, strengthening it.

The absence of most environmental stresses is beneficial to indoor plants, but the absence of having to deal with wind stress results in weak stems in the absence of wind stress.

In addition to shaking the plants, a fan gently blowing on the plants can also be used to apply mechanical stress to them.

The plants’ sturdiness in the wild is enhanced by their shorter and thicker stems, which enable them to better withstand wind damage.

In order to promote strong stems in young seedlings, I always use a small circulation fan.

Addition of carbon dioxide in enclosed spaces Before nutrients, CO2 is frequently a limiting factor.

Systems utilizing carbon dioxide (see CO2 Systems).

In addition to controlling CO2 with the ventilation system, there are many different environmental controllers available, some of which even measure CO2 in the air and regulate its release.

It may be possible to use a carbon filter to keep fungal spores and bacteria at bay in larger areas, and you may not even need to ventilate the space, resulting in a self-contained high CO2 room.

According to the United Nations Environment Programme, normal atmospheric CO2 levels (in the air) range between 300 and 500 parts per million, depending on where you live (urban or rural).

Plants have retained their ability to process CO2 at higher rates because the earth’s atmosphere contained more CO2 when they first evolved.

CO2 levels in the atmosphere must be between 1500 and 2000 parts per million (ppm) for maximum plant growth.

Maintaining these levels is simple with a Digital Controller.

Leaving CO2 at the soil level may cause it to seep out of your room, making it unavailable to the plants in your garden.

An irrigation system composed of a tank and multiple hoses allows you to position one of the hoses above each individual plant.

If you only have one hose, you can string it above the plants and poke small holes in the tubing to allow the CO2 to seep out over the entire plant canopy Always keep in mind that if you create large holes in the tube, all of the CO2 will be spent before it reaches the other end.

This is a simpler but LESS EFFICIENT solution.

As CO2 escapes from the grow area, its effectiveness diminishes proportionally.

As much as I appreciate the urge to employ organic or recycled CO2, the truth is that any increase in CO2 should result in a faster rate of plant development.

If heat is not an issue in your growing area, you might even utilize a gas or kerosene space heater.

In the course of the combustion process, fossil fuels emit carbon dioxide and water vapor.

Observe the CO2 Regulator and Tank Combo in action Take a look at the CO2 RegulatorTank Combination In order to be effective, heaters must not generate any residue or carbon monoxide (CO), which is a potentially lethal gas.

It is recommended that you exhaust the room before entering it if you are using a fossil fuel heater to add CO2.

Even though I haven’t tried things like CO2 boost (which is just sugar and yeast combined to make CO2), I assume they will add CO2 to the mix, however I’m not sure how long the CO2 will last after it’s formed.

Using a CO2 tank and a CO2 regulator, I would recommend that you release the appropriate amount of CO2 into your room at the appropriate time.

In your grow room, how much CO2 should you add?

The level of CO2 in your room’s atmosphere will rise to 2000 parts per million (ppm) if you raise the amount of CO2.

Determine the size of your room in order to accomplish this (length x width x height).

Using the previous example, if your room is five by five by eight feet, your volume is 175 cubic feet (5×5=175), and 175 x 0.002 is 0.35.

For the second step, divide the needed number of cubic feet of gas (0.35) by the flow rate to determine how long the valve should remain open.

Many timers will not regulate below 5 minutes (see: Timers), so you might start by leaving the valve open for 5 minutes every hour and gradually increasing or decreasing the amount of CO2 until no more rises or reductions in growth are seen.

When you are giving CO2 to the plants, you should try to make the area as airtight as possible.

Symptoms of excessive or extended exposure to carbon dioxide in humans include headache, elevated heart rate, dizziness, exhaustion, fast breathing, as well as vision and hearing impairment.

What do you think about that?

In reality, carbon dioxide is not a health hazard.

Simple as setting a timer and walking away.

Getting to know you and your adventures is a pleasure. Thank you for your efforts. Dr. E.R. Myers is a medical doctor that practices in the state of New Hampshire.

Why Do Plants Need Carbon Dioxide (CO2)

Carbon dioxide (CO2) is essential for the growth of plants because it allows them to undertake photosynthesis, which allows them to convert light energy into energy for growth. Plants would perish if CO2 were not present. Fortunately, there is generally always some CO2 floating about in the atmosphere. This gas has no odor and is colorless, and you are most likely breathing in minute amounts of CO2 at this very now. Increasing the amount of carbon dioxide (CO2) in your grow room has a variety of benefits for plants, including improved plant health and development.

  1. Plants photosynthesize, which is the process by which they transform light energy into nourishment for themselves, when they get additional CO2.
  2. The presence of these characteristics is frequently demonstrated by thicker roots, larger dark green leaves, and much more blooms as compared to plants that get insufficient CO2.
  3. By supplying it with additional CO2, the plant is able to utilize more light than it would otherwise be able to.
  4. PPM (parts per million) is the unit of measurement for CO2 (Parts Per Million).
  5. If the CO2 concentration in your growing area falls below 200 parts per million (PPM), your plant will cease to grow.
  6. Plant development has been proven to be enhanced when CO2 levels or concentrations are approximately 1500 PPM, according to several studies.
  7. Additionally, if you keep your growing space at 1000-1200 PPM of CO2, your plant will be able to handle higher temperatures, which means that if your lights generate a lot of heat, your plant will be able to tolerate it better.

How to Produce A Surplus Of CO2 For A Grow Tent

There are several ways to generate excess CO2, but there are only two strategies that provide a high degree of ease and efficiency at a reasonable cost. CO2 tanks and CO2 generators are examples of these approaches. In terms of increasing CO2 levels, these are the most effective and recommended strategies. Before you begin pumping CO2 into your grow room, you must ensure that the space is entirely sealed to ensure that outside air does not enter and alter the CO2 concentration. It is pointless to spend time and money on CO2 boosters if the air is able to escape from your grow room since it will just escape out of your grow room.

Set up cool tubes or hooded reflectors in your grow room to separate the air from the CO2 to guarantee that you don’t mistakenly vent it out accidently.

We don’t have to worry about our LEDs becoming too hot because the device has built-in fans.

In a cool tube, grow light may be produced. An illustration of how sealing your grow lamp works in order to prevent CO2 from escaping is shown below.

Using A CO2 Tank

This method of creating excess CO2 entails filling tanks with CO2 that has already been saturated. The use of CO2 tanks in carbon dioxide augmentation is a straightforward and cost-effective solution that is a favored first step. In order to be more convenient, the compressed CO2 or CO2 tanks should be situated outside of the grow room and connected to the growth tent by a pump that feeds into the growing area. There must be a safe distance between the pump and the plant. Due to the fact that CO2 is somewhat thicker than oxygen, it will sink to the bottom of your grow chamber.

  1. Fun fact: The stomata on the surface of plant leaves are responsible for CO2 absorption.
  2. Essentially, plants contain thousands of microscopic apertures (stomata) that serve as a substitute for their own lungs.
  3. Despite the fact that the advantages of a CO2 tank exceed the negatives, they do have some drawbacks.
  4. It’s also crucial to remember that the CO2 created in the atmosphere may be toxic to humans and animals, and that it should not be inhaled in large quantities since it can cause respiratory and health problems.

Using CO2 Generators

It is possible to create sufficient CO2 for indoor cultivation with a CO2 generator, which runs on liquid propane or natural gas and is the second most effective alternative. It is possible that the CO2 generator will be pricey. When employing a CO2 generator in a tiny indoor growing facility, it is critical to keep an eye on the temperature since, in compared to a larger indoor growing facility, the temperature increases moisture rapidly. Advice from the experts: To save money on CO2 generator costs, switch it off approximately an hour before the grow lights in your grow room are turned off.

You might also construct your own CO2 booster.

The difficulty with this technology is that, despite the fact that it is relatively inexpensive, it produces only little amounts of CO2 and produces poor outcomes.

Co2+ is a yield booster that will improve the size of your harvest by up to 50%.

This leads in bigger plants and higher harvests. When put within a Grobo or grow tent, Co2+ steadily distributes CO2 into the air, allowing your plants to benefit from the CO2.

Pros and Cons of Using CO2 Enhancers

Increased yields: It has been demonstrated that increasing the amount of CO2 in your grow area will result in faster-growing plants and higher yields. Who doesn’t want to be rewarded for their efforts with more cannabis? You will be able to produce plants that can handle greater temperatures: This is especially advantageous for individuals who use hot, bright grow lights. Plants can withstand temperatures of up to 30 degrees Celsius when CO2 levels are more than 1200 parts per million (PPM) (86F).


This approach is most successful when used with bright lighting: If you are using grow lights that are not very bright, this method will not be as effective. Since a result, this strategy works best when the plant is exposed to more light than it can consume, as the plant will be able to absorb more light than it would otherwise be able to do. Prohibitively expensive: This approach can be prohibitively expensive, especially if you need to close up your growing area. You’ll also need to purchase CO2 refills, which will add to the overall cost of every grow.


Increasing numbers of growers are choosing to develop their favorite strains indoors (for example, super silver haze) since it is extremely fulfilling to be able to grow cannabis all year long, regardless of where you reside in the globe. Many of these individuals, on the other hand, continue to underestimate the importance of the improved production that elevated CO2 provides. Both the CO2 tank approach and the CO2 generators provide producers with an intriguing new way to take advantage of the astounding and well-documented effects of CO2 on plant development.

See also:  What Do Tent Caterpillars Eat And Drink

Are you a fan of the stickers that come in different shapes and sizes?

Do you have any other questions on how to maximize your yields? Write us below.

Learn how to get the most out of your CO2 investment by following these steps.

1) Be aware of extractor fans

Is it necessary to extract air? Make the following adjustments to prevent your CO 2 from being sucked out by fans:

  • Is it possible to extract air? Ensure that the following measures are taken to prevent your CO 2 from being sucked out by fans:

2) Circulate air

CO 2 is much heavier than air. If left unattended, it has the potential to collapse and pool at ground level. To avoid this, make sure your air is mixed. This will ensure that the CO 2 level is consistent throughout your grow space. Something like the Quest F9 Air Moverwould be fantastic.

3) Add CO2 gradually

Attempt to gradually increase the amount of CO 2 available in your grow chamber.

4) Increase your feeds

Increased growth is a result of the addition of CO2 – make sure you have enough nutrients and water to sustain it by feeding plants more often.

5) If possible, switch off your extraction system during dosing

This provides plants with the opportunity to absorb significantly more CO2 during dosing. Fans should only be turned off for a limited period of time, and only if the temperature and humidity will not rise too high.

6) Don’t forget propane burners produce heat

When designing your temperature control system, you’ll need to take these factors into consideration.

How to Use CO2 to Increase Your Cannabis Yields [Guide]

Was it ever brought to your attention that an excessive amount of carbon dioxide (CO2) might be hazardous to your marijuana plants? Or that if your plants don’t get enough CO2, it might be detrimental to them as well? CO2 is a critical component in marijuana cultivation, and it has the ability to aid, hamper, or even prevent the growth of your plant. It’s important to keep many factors in mind when it comes to feeding your plants with more CO2. First and foremost, you must guarantee that your plants get CO2 levels more than 250 parts per million (ppm).

On the other side, if your plants are subjected to dangerously high CO2 levels, they may succumb to their fate.

The process of photosynthesis is completed by the plants as a result of its presence.

CO2 is formed from one carbon atom and two oxygen atoms, as implied by the name and chemical formula.

The addition of CO2 to your grow room, according to several growers, may enhance your production by as much as 20%. In this article, we will teach you how to properly introduce CO2 into your grow room in order to produce a superior end result.

How Do Plants Use CO2?

Stomata are the pores through which your marijuana plants breathe, and they may be found on all marijuana plants. It is through these that the plant is able to take carbon dioxide from the surrounding environment. Photosynthesis is the process through which plants absorb CO2 from the surrounding environment. Algae, particular bacteria, and plants employ this mechanism to capture light energy before converting it into chemical energy for use in their lives. When you cultivate cannabis indoors, your cannabis plants rely on the light emitted by light bulbs rather of natural sunshine to thrive.

  • While the oxygen is being re-released into the environment, the plant is using the essential sugars to continue to develop.
  • That is, as long as you provide them with sufficient illumination.
  • If your plants were to be kept in a room with insufficient CO2, they would eventually suffocate and die.
  • If there is already enough CO2 in the atmosphere and you continue to add more, you will not notice an increase in crop output.
  • In such situation, increasing the amount of carbon dioxide in the atmosphere is worthwhile since it will result in greater photosynthesis.
  • This simple approach should provide you with a boost in growth as well as an increase in the total yield size as a result.
  • It is, however, an expensive procedure, and there are a few factors to take into account before making the decision to invest.

Pros and Cons of Using CO2 Systems for Cannabis

Our recommendation is that you avoid using this method unless you are an experienced cultivator. This material is intended for experienced cannabis gardeners who understand how to maintain a healthy cannabis garden and produce high-quality bud. Make certain that you are also familiar with how to:

  • Selecting high-quality growth media and fertilizers is essential. Make use of top-of-the-line strain genetics. Consider installing a high-intensity lighting system. Grow in a room that is both sealed and safe
  • Diseases and pests should be avoided or treated.

If you match the requirements outlined above, continue reading to understand how CO2 may be used to boost cannabis harvests. However, you should also be aware of the advantages and disadvantages.


You should continue reading if you match the requirements outlined above for learning how to boost cannabis yields by utilizing CO2. The advantages and disadvantages should be discussed as well.

  • Growth that is more rapid Increased Yield: Once you’ve optimized the other limiting elements, such as light exposure, CO2 can deliver a 20 percent or greater increase in your return on investment. It has also been shown to improve the growth rate of plants by a comparable proportion. Security: As long as you properly seal your space, CO2 can give an added layer of protection because no foul-smelling air is being blown out. With a CO2 generator, you may mask the odor of cannabis with ‘natural’ scents that are not detectable by the human nose.

You Can Raise the Temperature in the Grow Room: If you keep the CO2 level between 1200 and 1500 parts per million, you can raise the temperature to up to 95 degrees Fahrenheit.


  • Expensive: Adding CO2 to a grow room is a time-consuming and expensive procedure, especially if you’re running a large-scale business. The least expensive techniques of introducing CO2 are also the least efficient. They can, at the at least, demonstrate the possibility of increasing carbon dioxide emissions. On the good side, the majority of the costs are incurred by the startup equipment. You’ll Need Powerful Grow Lights: Using compact fluorescent lights (CFLs) or T5s will not provide appropriate illumination. As an alternative, we propose that you use bright LED lights or that you buy in an MHor HPS system
  • You Must Shut the Grow Area: If you are attempting to raise CO2 levels above 1000 parts per million (ppm), you must seal the room. High quantities of carbon dioxide are detrimental to human health
  • Thus, you must take action.

If you’re willing to spend the money and aren’t bothered about the drawbacks, then ask yourself the following questions before moving further. If you answered ‘yes’ to all of them, you can begin adding CO2 to your growing environment:

  • Have you maximized the quantity of light your plants can use from the grow lights you already have in place? What makes you certain that you have completely removed all problems from the grow room, including pests and nutrient deficits
  • Are you familiar with the methods of growth control that may be used to boost yields? Are you able to maintain the temperature of the grow chamber between 85 and 95 degrees Fahrenheit? During the vegetative stage, are you able to maintain humidity levels at 70%, and at 60% during the blooming stage

Are you prepared to seal your grow room if you can raise the CO2 content in it to 1500 parts per million (ppm).

How to Introduce Additional CO2 to a Garden

There are a plethora of methods for increasing carbon dioxide levels in the garden. Many of them, on the other hand, do not ensure that the ppm will be administered in a regulated manner. Because of this, we propose that money be invested to guarantee that it is done appropriately. If one of these two solutions is prohibitively expensive, you should avoid using any other systems until you can afford a generator or compressed CO2 system.

CO2 Generators

Carbon dioxide generators, which resemble patio heaters in appearance, generate CO2 by burning natural gas or propane, and they are becoming increasingly popular. Consequently, the exhaust fumes produced are virtually exclusively composed of water vapor and carbon dioxide, as opposed to other gases. In the case of a generator with a single burner, the CO2 produced should be sufficient for an 800 cubic foot grow room. It is possible to program CO2 generators to automatically turn on or off when carbon dioxide levels reach a pre-determined level.

When you burn these gases, though, you generate a lot of heat, which is difficult to control in a tiny grow room.

Consider the following scenario: your grow room is 10 x 10 x 10 ft.

If you are already having difficulty controlling the temperature and humidity in your home, the generator might exacerbate the situation.

Compressed CO2

Hydroponics stores, as well as home brewing and compressed gas supply stores, should have compressed CO2 tanks available for purchase. Manufacturers create gas, which is collected and compressed into tanks before being released into the environment. This allows you to inject a regulated amount of CO2 into a space without the need to acquire a CO2 generation system. Furthermore, because you are not emitting heat when you release the gas, there are no issues about temperature or humidity. A pressurized CO2 tank is ideal for use in a small grow room setting.

Connect the doser to the tank and turn on the tank’s valve to start the process.

Remember that photosynthesis can only take place while the lights are turned on, therefore set the timer to turn out the lights at night.

Set a timer to begin administering CO2 approximately 60 minutes after the lights are turned on. Then, configure the last dose to be administered 60 minutes before the lights are turned out. You will be able to give your grow room with sufficient CO2 in an inexpensive manner in this manner.

Other Methods of Adding CO2 to Your Grow Room

The use of natural processes to generate carbon dioxide is part of this strategy. Despite the fact that it is a low-cost and relatively simple approach, it frequently results in a bad stench throughout the fermentation phase. Furthermore, it will only have a little impact on CO2 levels.


The composting process emits a minimal quantity of carbon dioxide, but it is unpleasant and unhygienic to be involved in. When you use handmade compost, it might be difficult to determine whether or not you are adding enough CO2. Additionally, there are a variety of pre-made compost systems available, but they are prohibitively expensive. A generator is an investment that should be planned for if money is going to be spent.

CO2 Bags

These bags generate CO2 with the use of fungus that grow on organic stuff. It is, however, difficult to grow the fungus appropriately, despite the fact that the producers promise that you do not need to do anything. Additionally, in order to dramatically boost the ppm in a tiny grow space, you must use at least four CO2 bags.

Dry Ice

The CO2 produced by these bags is produced by fungi that grow on organic debris. Despite the fact that manufacturers state that you don’t have to do anything, it is not easy to grow the fungus appropriately. Additionally, in order to see a significant rise in ppm in a tiny grow room, you must use at least four CO2 bags in that space.

How to Use CO2 in Your Marijuana Garden

CO2 levels in the atmosphere are currently averaging 405 parts per million (ppm). This is the greatest level that has been recorded in over 800,000 years! In 1980, the average level was slightly higher than 330 parts per million (ppm). According to a study conducted by Bugbee et al., plant growth is boosted even when CO2 levels reach 10,000 parts per million! While this is fantastic news for cannabis, people should be on the lookout! CO2 levels above 3000 parts per million (ppm) become harmful, while levels above 5000 parts per million (ppm) are lethal.

A CO2 concentration of between 1200 and 2000 parts per million (ppm) is more than sufficient to provide an increase in yield.

In an ideal situation, the CO2 source would be located above your marijuana plantation.

You may also utilize fans to circulate the gas around the space, ensuring that your entire crop reaps the advantages.

For example, in a plastic greenhouse, CO2 levels can drop to less than 200 parts per million (ppm) within 60 minutes after sunrise!

Your plants will stop developing if the concentration falls below 100 parts per million (ppm).

A grow chamber with a CO2 concentration of at least 1200 parts per million (ppm) is required.

During these circumstances, you should see an increase in your yields (some growers claim a 50 percent increase). Another advantage is that the period required for fruiting and blooming can be shortened by up to 10 days.

Final Quick Tips on Increasing CO2 Levels in Your Marijuana Garden

  • Consider employing air-cooled lights with glass inserts instead of incandescent lights. It is estimated that around 50% of the heat is removed from the lights before they are allowed to enter the room. Additionally, by employing sealed glass, you may limit CO2 loss to virtually zero levels. Please make certain that the relative humidity level is between 40 and 60 percent throughout your visit. It is possible that the stomata of the plant will close if the level falls too low. Dehumidifiers and recirculating air conditioners should be purchased. It is wasteful to utilize exhaust fans that cycle on a regular basis since it wastes CO2. Fans with oscillation are a wise investment since they increase air circulation. A vapor barrier can form on the bottom surface of leaves due to stagnant air, which hinders carbon dioxide absorption by the leaves. Humic and fulvic acid additions should be used since they help to increase the absorption of iron and other nutrients. In high CO2 environments, iron works as a catalyst for the formation of chlorophyll, hence accelerating the process of photosynthesis. Increase the ratio of ammonium to nitrate in your fertilizer to see if you can improve results. When CO2 levels are high, plants do not absorb as much nitrate-nitrogen, but they do so more effectively when nitrogen is in the form of ammonium.

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