# What Size Fan For 3X3 Grow Tent

## What Size Fan Do I Need For My Grow Tent? (With Handy Table For Common Sizes)

First and foremost, the bad news. It’s possible that you’ll have to conduct some math. The good news is that It’s a simple piece of mathematics. And we’ll take you step by step through the process. In addition, we’ll provide you with a useful table that lists the most typical grow tent sizes and configurations. Chances are you will be able to find your information in the table and will not have to perform any calculations.

## What Size Fan Do I Need For My Grow Tent?

It is not the size of the fan that is crucial. It refers to the capacity of the fan. First and foremost, you must determine the amount of capacity you require. The capacity, in turn, dictates the size of the fan. For the majority of home gardeners, a 4 or 6 inch fan would suffice. How do we determine the amount of fan capacity you require for your grow tent’s fan? By following the steps in the computation we’ll go through later. Alternatively, you might scroll down to our table and see whether your tent size is listed there as an option.

### Calculating Base Fan Requirement For Your Grow Tent

Obtaining the overall volume of your grow tent is the first piece of information you’ll need. To obtain this, simply multiply the width by the length by the height (width times length times height). For the sake of this computation, we are using feet rather than cubic feet per minute since fan capacity are measured in cubic feet per minute in the United States. It makes no difference whether or not you utilize meters in your calculations. Consider the following scenario: you have a 5 by 5 foot grow tent with a height of 78 inches, or 6.5 feet.

• The total volume is equal to 5 x 6.5 = 162.5 ft3.
• The capacity of a fan is measured in cubic feet per minute (cfm), which is an abbreviation for cubic feet per minute.
• For the most part, we recommend that you strive to refill the air in the tent once per minute.
• Using this formula, divide the entire grow tent volume by two or three to obtain the base fan capacity you want.
• Not so fast, my friend.
• If you simply have one fan extracting air and nothing else, the capacity we offer is the minimum amount required.
• In addition, there are variables that raise the capacity requirements.

### Adjusting For Ducting, Filters, Lights, Etc.

Components such as ducting and filters all contribute to a reduction in the capacity of your fan. You must take this into consideration in your calculations and purchase a fan with greater power to compensate for the drop in airflow. Other components, such as lighting, can enhance your cooling requirements. You’ll need to build in some extra capacity to accommodate them.

If your tent is going to be in a hot environment, you should also include some extra capacity. Here are some of the most typical components and considerations to consider, as well as the impact of the additional capacity you’ll wish to add, expressed as a % increase in capacity.

• Lights: a 10% rise for each additional grow light
• Filters: a 25% increase for each additional filter
• Ducting: a 1% increase for each additional foot of ducting
• Bending of ducting: 30 percent for every 90-degree bend (15 percent for every 45-degree bend)
• External heat: If your grow tent is located in a warmer area (e.g., the attic or a sunny room) and/or is not adequately insulated from the external environment, the temperature will rise by 10%.

Add together all of the percentage increases to obtain the overall % increase. Consider the following scenario: we have a single grow lamp, one filter, and 6 feet of ducting with one 90-degree curve. However, the tent is not situated in an exceptionally hot environment. Growth lights add 10% to the total percentage increase, which is 25 percent to the filter and 36 percent to the ducting and bend. The total percentage increase is 71 percent. Then you’ll want to convert this percentage to a decimal and multiply it by one hundred.

• A 44 percent rise would result in a 1.44 percent gain.
• As a result, a 125 percent rise would result in a 2.25 percent increase.
• As a result, 5 percent would be 1.05 percent (and not 1.5, which is a 50 percent increase).
• In our example, that was 162.5 cubic feet per minute.
• In our case, the required capacity is 162.5 cfm multiplied by 1.71 to equal 277.875 cfm.
• However, it is typically a good idea to get a fan that has around 25% greater capacity than you actually require.

### Get A Fan With More Capacity Than Required

We strongly advise you to get a fan with a larger capacity than you require. Running fans at full capacity puts greater strain on them, which means they will not last as long as they should. It also causes them to become louder. When you run a fan at a lower speed than its maximum speed, it will last longer and operate more silently. It also provides the ability to expand capacity in the event that your cooling requirements develop in the future. Nothing can be predicted; a heat wave, for instance, may occur.

Adding 25 percent to our previous example works in the same way as before: increase the capacity by 1.25 times the percentage.

Make a rounding error and purchase the next largest capacity fan of the type you desire.

It has a capacity of 402 cubic feet per minute.

### What Is A Good Fan To Get?

There are many various types of fans available on the market, and the most of them will perform admirably. In general, the more money you spend, the higher the quality of the product or service you receive. This typically indicates that the fan operates at a lower noise level, is more efficient (has a larger capacity per watts consumed), and has a longer lifespan. Our favorite fans are the AC Infinity Cloudline fans. They are neither the most affordable nor the greatest quality. However, they are the most cost-effective option.

The 4 inch fan has a capacity of 205 cfm, the 6 inch has a capacity of 402 cfm, and the 8 inch has a capacity of 807 cfm. In huge tents, you may require more capacity than even the largest fans are capable of providing. This would necessitate the purchase of a number of fans.

### Table Of Fan Requirements For Common Grow Tent Sizes

The fan power (in cubic feet per minute) required for various grow tent sizes is shown in the following table. It is not an issue if the height of your tent is somewhat different from the standard height. The capacity that has been provided will still be adequate for your needs. In the same way, if you have a few additional feet of ducting (or a few extra feet less), you may still utilize the closest circumstance in the table to get the job done. Because you should be purchasing a fan that can handle around 25% more airflow than your requirements, you should have some wiggle space if you find yourself in need of a little extra power later on.

• That implies one light for everything up to and including the 55, two lights for the 48 and 510, and four lights for the two biggest sizes, respectively.
• That means the cfm value you are given is your final number, and it is this number that you should search for in a fan while shopping.
• We suggest their 6 inch fan for anything that requires less than 402 cfm.
• If your tent’s airflow requirements exceed 807 cfm, you’ll need to install many fans in it.

## Do I Need An Intake Fan?

In most cases, an intake fan will not be required for tiny tents. If you have a sufficient number of intake vents or if they are of sufficient size, having only intake vents may be sufficient. Generally speaking, opening intakes should be three to four times the total size of the outtake vents, according to the rule of thumb (s). You might have one enormous intake aperture or three smaller ones that are each as large as the outflow opening, depending on your needs and preferences. If your tent does not have enough, or openings that are large enough, you will need an intake fan to keep the air flowing.

It has the potential to have around 25% less power.

It goes without saying that any ducting and bends in the ducting that are linked to the intake fan should be taken into consideration as well.

In the case of 5 feet of ducting with one 90-degree bend linked to the intake fan, you need to increase its capacity by 30% (25 percent for the bend and 5 percent for the ducting length), therefore you multiply by 1.3 to get the required increase in capacity.

## What Size Carbon Filter Do I Need?

When purchasing a carbon filter, there are basically just two considerations to keep in mind. The first is that the flange size must correspond to the fan size. If you purchase a 4 inch fan, be certain that you also get a 4 inch filter. Second, ensure that the filter’s capacity (also measured in cubic feet per minute) is equal to or greater than the fan’s capacity.

It is recommended that you get filters from the same manufacturer as your fans. For example, if you choose the AC Infinity fans that we propose, they will come with matching filters as well.

## Where To Place Fans And Filters

You have a great deal of latitude in this situation. The first option you must make is whether to place both the fan and the filter inside or outside of the tent, depending on your preference. It is also possible to have one inside and one outdoors. Inside is normally less difficult, but it may not be a choice if you do not have the necessary room. If you’re thinking about placing your grow tent outside, check out ” Carbon Filter Outside Grow Tent “. The fan and filter should be placed at the very top of the tent if they are being used within the enclosure.

In order to pull in colder air, the intake vents (or fans, if you want to use them) should be situated toward the bottom of the enclosure.

## Fan Size For Grow Tent: Final Thoughts

Calculating the proper fan size for your grow tent may appear to be a difficult task, but it does not have to be. In following the guidelines we provided above, you will end up with a fan that is capable of successfully removing any surplus heat from your tent, regardless of whether you have a large grow tent or a little grow tent setup. Most likely, the size of your tent was already included in our table, and you were able to avoid having to perform the calculation. It wasn’t that tough, even if you had to perform the arithmetic (or even if you simply ran through it in your head), since it wasn’t that complicated.

## The 4 Best Fans for 3×3 Grow Tents – Right Size Fan Reviews 2021

Selecting the most appropriate fan for your 3×3 grow tent is essential. The use of grow tents has become increasingly common in recent years. Changes in state regulations, as well as a desire to produce one’s own food, have contributed to the increase in popularity of this practice. Whatever the cause, selecting the proper fan size is critical to achieving a good plant development outcome. Having taken the time to research hundreds of various fans over a wide variety of pricing ranges, we came up with many options that fit our requirements in terms of performance, size, durability, noise levels, and, of course, airflow for a 3×3 grow tent instead of a single fan.

1. Can be used to filter group 736748 Can a Pro Series fan be a fan?
2. The Can Pro Series 8′′ fan is extremely energy efficient and operates at a low noise level.
3. The fiberglass reinforced plastic casing (see complete specifications) ensures that it is both sturdy and corrosion resistant.
4. Because of the lightweight construction, it is simple to hang or install in place.
5. Inline Fan with 395 CFM Exhaust Duct by TerraBloom, 6 inch diameter.
6. It is the ideal size for usage in ventilation systems equipped with activated carbon filters, which are effective in removing the majority of grow tent aromas.
7. As opposed to a switch embedded into the housing, TerraBloom integrated the speed controller into the six-foot-long grounded power line, making it simple and convenient to operate.

ACDF8 Active Air Inline Fan for Hydroelectric Power Plant The housing of this 8-inch fan is made of ceramic coated steel, which is one of the fan’s outstanding qualities.

While we are looking at the eight-inch version of this fan, Hydrofarm also sells this fan in a variety of different sizes to match your individual requirements.

There is no need to grease the fan motor bearings because they are completely sealed for life.

This is a picture of the Grow Show Indoor Hydroponic Inline Exhaust Fan.

However, despite its tiny size, the fan rotates at a speed of 2930 rpm and can move up to 195 cubic feet of air per minute into your tent.

The use of a unique built-in flow deflector, which helps to decrease turbulence, makes this one of the quietest fans available, producing only 30 decibels.

The Vivosun 4″ 195CFM Inline Ventilation Duct Fan is being unboxed.

Now that you’ve had the opportunity to read our assessments, let’s speak about the characteristics we sought for in a fan.

However, this is not the case.

The needed airflow may be calculated using the following simple formula: H (height) x W (width) x L (length) x 1.25.

This figure, on the other hand, represents the very minimum quantity of airflow necessary in your grow tent.

It is also important to consider how much radiant heat will be produced by the lights in your grow tent.

In the case of HID lights, for example, they have a tendency to create a great deal of heat.

Using the most up-to-date LED grow lights, on the other hand, can result in far less heat being generated.

Size of the Ventilation FanAs you have already observed, ventilation fans such as these are available in a number of sizes.

However, for a 3×3 grow tent, you should definitely stay with anything in the 4 to 8 inch range.

There is a caveat to this, though: larger is not necessarily better in this case.

When choosing a fan for your tent, bear in mind that it should be capable of keeping a constant temperature in your tent regardless of whether the lights are on or off.

In order to save money, you need a fan that will not fall apart after 6 months, causing you to pay extra money to replace it.

A fan that overheats and ignites is the last thing you want to happen when you’re shopping for a fan.

When working with a smaller grow tent, a lightweight “plastic” fan may be the ideal option owing to the restricted amount of space and structural strength available to you.

If the coating is not scratched or damaged, it will aid in the prevention of corrosion.

It’s true that the fiberglass reinforced plastic fans are a little more expensive, but the durability and long life they provide offset the additional expense.

In order to properly grow plants in a grow tent, you don’t need much space.

Keeping the air fresh and moving will aid in the growth of your plants, allowing them to become larger and more productive.

This, however, will not be possible if you do not have the finest fan for 3×3 grow tents on hand.

Fortunately, there are many excellent fans to select from; the ones shown in our review are merely the ones we found to be the most appealing.

The information given in our evaluations is intended to be informative, and understanding what to look for can assist you in finding the appropriate-sized fan for a 3×3 grow tent that fulfills your requirements and fits within your budget!

• The ones shown in our review are merely the ones we found to be the most appealing in our opinion. The information given in our evaluations is intended to be informative, and understanding what to look for can assist you in finding the appropriate-sized fan for a 3×3 grow tent that fulfills your demands and fits within your budget!

Distribute the article and images

## 3×3 grow. Choosing the correct fans

1. Greetings, fellas. I recently purchased a 3 x 3 x 6 tent and was curious as to what the recommended air exchange rate for the tent was. I’m assuming I’ll need two intake vortex fans, and I’m thinking 6 inch ducting, as well as a carbon filter to eliminate odors. There are also additional fans to move the air. What total cubic feet per minute do I require? Or, to put it another way, what fans should I purchase? Also, what temperature do you recommend for me? And what about humidity? I am aware that this varies significantly from veg to flower and/or between strain types. Any assistance is greatly welcomed
2. Thank you. Thank you so much, guy. In fact, I had started a topic on another website as well. I was able to locate the precise website you mentioned, and I put it over there to bring the topic to a close. Everything is explained on the website, and I appreciate the connection
3. Date of joining: November 11, 2016 Messages:7 Likes Received:1 Compared to you, I have a tent that is 36 inches by 20 inches by 60 inches, which is slightly smaller than yours, and I am using a 4″ ventech inline exhaust system with a carbon filter for odor control. For just \$100, I was able to get it along with a fan speed controller from Amazon. This fan is ideal for my use because my grow tent is located in my room, not in a closet or somewhere else, and it operates extremely quietly when the speed controller is used in conjunction with it. As far as temperature is concerned, I notice a lot of grow journals where individuals are reporting temperatures in the mid- to upper-70s during both the vegetative and blooming stages. When it comes to humidity, I believe that somewhere in the neighborhood of 50 percent is ideal
4. Lol. Right now, I’m looking at the exact same item on Amazon. We will make the purchase in a few days if this pricing is maintained. I’m relieved that it works. I was planning on getting the 6 inch option just to be on the safe side. Do you have a tiny cfm fan that you can use to draw air into your tent? Take a look at that webpage. It contains a great deal of information. Ideally, they claim that 70 percent humidity is appropriate for plants in the vegetative stage. During flowering, you want the temperature to be in the low 40s

### Old School

1. Date of joining: January 31, 2013 Messages:16,500Likes Received:13,866 It all depends on the type of lighting you’re utilizing. The greater the amount of heat you generate, the larger the fan you will require to deal with it.

## Grow Tent Fans – Sizes, Placement, Setup, FAQ (Updated 2022)

It is critical to have adequate circulation in your grow tent if you want to avoid mold and powdery mildew from growing on your cannabis. Throughout this article, I’ll cover everything you need to know about choosing an inline fan for your grow tent and how to properly install and configure it as well. How to choose the proper grow tent fan size and power rating, where to place the fan, how to set up your grow tent fan, and what other accessories you’ll need are all things I’ll assist you with.

### Selecting the proper grow tent fan size and power:

“What is the right grow tent fan size?” is definitely one of the first questions you’re thinking about. as well as “What is the recommended grow tent fan power?” Generally speaking, when it comes to replenishing air in a grow room, the rule of thumb is that you should be able to replace all of the air once each minute. That is the CFM rating, which you will learn more about further down. In order to keep your grow tent cool, the fan diameter will be decided by the CFM (cubic feet per minute) rating that you want.

So don’t be concerned about having the correct CFM rate.

Then there are a few other factors, such as a 25 percent drop in fan power if you include a carbon filter, and a 30 percent loss in fan power for each 90-degree curve in your ducting.

#### The proper size fan for a 4×4 grow tent:

Let me give you an example of how to calculate the area of a 4×4 grow tent, which is a fairly typical size among indoor growers: The majority of 4×4 tents have dimensions of 48 in x 48 in x 80 in. As a result, the total volume of air in a 4×4 grow tent is 4ft (length) x 4ft (width) x 6.667ft (height) = 106.67 cubic feet (4ft (length) x 6.667ft (height). However, this does not imply that you require a 106 cfm fan. When you consider that a carbon filter will lower your fan efficiency by 25 percent, and that one 90 degree duct bend would reduce your fan efficiency by another 30 percent, a fan that produces 215cfm will produce 112cfm (200cfm x 0.7 x 0.75).

#### What size fan is needed for other grow tent sizes?

(Click on image to expand) It is important to note that grow tent inline fans are not made to the precise CFM output you want, thus you may have to go over by 50-100cfm when selecting a fan for your grow tent. I recommend using a fan with variable speed settings, such as the AC Infinity S or T Series, so that you may modify the CFM to meet your precise requirements. Each of the AC Infinity fans listed below has ten speed options, so if you just want 100cfm, you may get the most basic model, which is a 205cfm fan, and run it on the middle speed level to achieve that volume of air.

### Grow tent fan placement:

Depending on where you want your grow tent fan to be, you have two alternatives. It is possible to work either inside or outside the grow tent. What’s the difference between the two? If you pick outdoors, the fan will draw air from the interior of your tent to the outside through a duct located on the top corner of your tent, allowing you to be more comfortable. You’ll want the fan and filter (if you’re using one) hanging near the top portion of the tent, where the warmest air will naturally travel to keep it cool inside.

Hangers are not often included with fans, so double-check that you have them.

If you decide to place the fan outside, you’ll need to figure out how to get it to rest in a comfortable position.

The bottom of most grow tents is equipped with passive air intakes, which are netted openings that let fresh air to enter the tent. Because of the fan’s ability to produce a low pressure condition within the tent, when air is blasted out, new air is naturally drawn into the tent.

### Grow tent fan setup:

Yes, the diameters of your inline fan and duct will need to be the same at the place where they connect.

##### Passive or Active Air Flow For Your Grow Tent?

The sorts of fan sets you may utilize in your grow tent or growing room are passive and active. Passive fans are the most common. The difference is whether you want air to passively re-enter your grow tent or if you want it to aggressively re-enter your grow tent. Passive grow tent air circulation relies on a single inline fan to evacuate hot air from your grow room, reducing the need for additional fans. When air is forced out of your enclosed grow area, the pressure in the room drops to a negative pressure, which means that air from outside the tent or room should naturally be drawn in via any openings to replace the air that has been forced out of the space.

1. If you want to guarantee that the air returning to the tent is being filtered, or if the air returning to the tent is not returning rapidly enough, active grow tent air replacement is the best option for you.
2. Simply ensure that you have the right size ducting (which should be the same diameter as your fan), duct clamps, hangers for hanging, and zip ties before beginning (make sure zip ties are long enough to go around the diameter of your carbon filter).
3. To install the filter, just attach ducting to the side of your fan that is responsible for sucking in air.
4. Clamps should be used on both sides (usually provided).
5. If you’re using an active air flow configuration, I’d recommend operating both fans at the same speed to ensure that the quantity of air escaping the grow tent equals the amount of air returning to the grow tent.

#### How to install a grow tent fancarbon filter inside your tent:

Attach the hangers to the support bars that run along the roof of your grow tent. You’ll need enough for the fan and the ducting, so plan accordingly. Make sure they’re the right length for the fan you’ll be hanging. Keep in mind that heated air rises to the top of the tent, so avoid hanging the tent too low. 2.Attach zip ties or metal brackets to the attachment area of your grow tent fan: Place zip ties or metal brackets to the attachment region of your grow tent fan. Zip ties should be used to connect hangers.

In order to use your grow tent fan, you must first connect your carbon filter to the intake side of the fan (the side that sucks air in).

You may either connect it directly to the fan or use ducting to attach it to the fan.

5.Connect ducting to tent exhaust opening: Connect the ducting to the tent exhaust entrance located at the top of your grow tent. Attach the grow tent duct sleeve to the fan ducting by wrapping it securely around it.

#### Other Inline Fan Installation Notes:

The setup is straightforward; it took me no more than 30 minutes to complete my AC Infinity T4 installation. The most efficient design would be to route the duct out a window so that the hot air from your tent does not just blow into the room where your tent is placed, where it would be sucked back in and render the entire operation ineffective. Not everyone has the benefit of having a window in close proximity to their camping site. In that case, if you’re compelled to blow tent air into the same room where the tent is placed, I highly recommend investing in a portable air conditioner to re-cool the air before sucking it back into the tent through the bottom tent windows.

### Does It Matter What Carbon Filter I Choose For My Grow Tent Fan?

When selecting a carbon filter for your grow tent fan, the one thing you want to be certain of is that the diameter of the connection point on the fan and the filter are the same. Make certain that your inline fan is equipped with a four inch carbon filter if your fan is four inches in diameter. Apart from that, there isn’t much of a difference between carbon filters; they’re simply large metal canisters that filter your air through charcoal to remove impurities and odors from it.

### Do I Need an Oscillating Fan in Addition to my Inline Fan?

Even though the inline fan removes and replaces the air in your grow tent, it performs a poor job of circulating the air. As a result, you should think about including an oscillating fan in your grow tent to keep the air circulating and prevent mold and mildew spores from taking root. It will also aid in the distribution of fresh air for the benefit of the plants. There are little affordable oscillating fans that you can attach into the grow tent poles if you have a look at the fans I’ve listed below.

### Which Grow Tent Fans I Recommend:

As long as you’re willing to purchase the ducts and hangers separately from the fans, AC Infinity offers fantastic grow tent fans. Purchasing the ducts and hangers is simple – simply match the duct diameter to the fan diameter. What is it about the AC Infinity fans that makes them so much superior than the competition? This fan is equipped with a programmable controller, which allows the fan to switch on in response to a range of different scenarios. For example, you may program the fan to turn on when the humidity reaches a given threshold.

2. When my AC Infinity T4 was running at maximum power, I was pleasantly pleased at how quiet it was.
3. This results in the fan motors being loud.
4. Quiet Inline Duct Fans With Temperature and Humidity Control – CLOUDLINE SERIES Them fans are priced similarly to other fans without the technological characteristics, therefore it makes financial sense to purchase one of these instead of another fan.

The fans are available in three sizes: 205cfm, 351cfm, and 750cfm (4-inch, 6-inch, and 8-inch). Click here to see whether they are available on Amazon.

#### VivoHome Inline Fan Kit

If you don’t want to go through the trouble of sourcing all of the components separately, this kit includes a fan, 8 feet of ducting, clamps, hangers, and a carbon filter. It is available in two different sizes to accommodate different grow tent sizes. With this kit, the main drawback is that the fan cannot be programmed to come on when particular conditions are fulfilled, such as a certain temperature or humidity. The fan has a simple on/off switch. Despite the fact that some customers have stated that they are content with the fan running all of the time.

#### Secret Jardin Clip On Monkey Fan for Grow Tents:

Secret Jardin created this 6-inch clip-on oscillating fan with a grow tent owner in mind when they created this product. The clip is designed to attach securely on the support poles of grow tents. The fan will ensure that your grow tent has adequate air circulation, which is necessary to avoid the growth of mold and powdery mildew. I’d recommend using one of these oscillating clip fans in conjunction with an inline fan in order to maintain the ideal growth environment in your grow tent.

#### Keeping Your Grow Tent Cool

When it comes to keeping your grow tent temps under control, you may want more than simply an inline fan. My best recommendation, without requiring you to read the entire post, is to consider purchasing a portable air conditioner for the room in which your tent is placed, or to consider adding CO2 to your growing environment, which allows you to grow a few degrees hotter than usual. See my whole post on decreasing grow tent temps for more information.

### Ideal Grow Tent Temperature and Humidity for Growing Cannabis:

The optimal temperature for cannabis plants is between 70 and 80 degrees Fahrenheit (23 degrees Celsius). Consequently, consider yourself fortunate if you have a modest grow light in a small tent, or other circumstances that allow you to maintain those temps without using an inline fan. During the seedling and vegetative stages of the cannabis plant’s life cycle, 60 percent to 70 percent humidity is ideal. When cannabis plants are in the blooming stage, they grow best when the humidity is between 40 and 60 percent.

As your plants mature, they will begin to use a significant percentage of the CO2 that is available in your growing environment.

#### Other Resources for Growing Cannabis Indoors:

I developed numerous useful lists and tips to assist you in completing your home improvement project the right way, in addition to determining the proper fan size for your needs. The following are some other articles I strongly recommend: Choosing the Proper Size Grow Tent, This Year’s Best LED Grow Light List, and Understanding Grow Light PAR PPFD and Wattage, among others. Last but not least, don’t forget to check out myhome page for a comprehensive collection of useful resources.

### Grow Tent FanCarbon Filter FAQ:

You’ll just need 30-45 minutes to complete this task.

### What should I do if there isn’t a CFM output for my exact grow tent size?

The AC Infinity fans feature a number of different speed settings to choose from.

As a result, if you just want 100cfm, you may get the 205cfm (smallest model) and utilize the middle of the ten available speed settings.

### If I’m buying parts separately, how do I know if they’ll all fit together?

The diameter of all of these components is the same. If you purchase a 6′′ fan, be sure you also purchase 6′′ ducting and a 6′′ filter to complete the installation. That’s all there is to it, really.

### Do I need to hang the carbon filter?

The carbon filter should be placed at the top of your tent in order to capture the warmest air because it is where air will reach your fan from the outside. It would be inefficient to hang the filter low or to place it on the floor, for example.

### Which end of the grow tent fan do I connect the carbon filter?

Connect the carbon filter to the “front” of the fan, which means that the fan is sucking air through the filter rather than expelling air through it, and that the fan is running continuously.

### What size fan will fit in my grow tent?

Most grow tents accommodate 8-inch ducting, while some may only accommodate 6-inch ducting.

### What if the size of my duct is too big for the duct hole on my grow tent?

If your grow tent outlet is 6 inches in diameter and your ducting is 8 inches in diameter, you’ll need to purchase a ducting reducer.

### There’s too much negative pressure in my grow tent

Alternately, reduce the speed of your fan and, if possible, open up the passive air intake windows on the bottom of your tent even more, or consider installing an active air intake fan, which works in the same way as your other fan but is mounted on the bottom of your grow tent and pushes air into the growing chamber.

### Can you wash or clean carbon filters after extended use?

It is possible to clean a carbon filter using compressed air. The filter may be used for up to one year before it has to be cleaned.

### Can you place a carbon filter on each side of your fan?

Yes, although it may result in a slight reduction in the power efficiency of your fan. Check to see if your fan is strong enough to manage the additional carbon filter load.

### Do all carbon filters come with pre-filter wrap for the exterior of the canister?

Pre-filter wrap is not included with all carbon filters; thus, if you want a pre-filter included, be sure to check the product page specifics before purchasing.

### What’s the largest outer dimension of my carbon filter?

Increase the output size by approximately 2 inches. On a 4 inch carbon filter, the canister diameter would be approximately 6 inches in diameter.

### How long do carbon filters last?

Carbon filters are designed to endure for at least one year of continuous usage.

### Do I need inline and oscillating fans in my grow tent?

Inline and oscillating fans serve various functions in the grow tent, so it’s a good idea to use both if you have the option.

## How to Calculate Required CFM for a Grow Tent

When it comes to ventilation a grow tent, it’s critical to understand how much air has to be moved in order to offer a suitable amount of fresh air. Due to the fact that it takes up the whole area, you can safely assume that the volume of your grow tent is equal to the amount of air that has to be exchanged. When you are filling the area with accessories, the calculations get a little more complicated. So, using our full-grow tent ventilation instructions, you can learn how to calculate the CFM you require.

## The Formula

Determine its cubic foot capacity by multiplying its length by the width and height of the object in question. Convert measurements between different units of measurement as needed. This will equal the volume of your area, and the needed airflow will be equal to this value in cubic feet per minute, or CFM, as shown in the table. The following is an example of the formula: As an example, a 48″x36″x72″ grow tent translated to feet would be a grow tent measuring 4’x3’x6′ in size.

When the measurements are added together, the result is 72 ft3 of space. Because the volume of a grow area is equal to the amount of CFM necessary to air it per minute, the base CFM for this grow tent is 72.

## Grow Tent Accessories

In order to boost your base CFM, you must multiply it by the efficiency percentages of your accessories. In your grow environment, adding components such as ducting and carbon filters may lower fan performance, which will alter how hard your fan has work to get the desired results. When it comes to ducting, the quantity and sharpness of its bends play a role in determining the resistance to airflow. As a result, airflow decreases the longer it needs go, making a straighter ducting path more effective.

• Smoothing out any creases can also help to improve the operation of the fan and the flow of air.
• These considerations increase your necessary CFM, which necessitates the use of a high-capacity fan in order to move the predicted airflow.
• Grow light heat multiplied by (base CFM multiplied by component components) = Required CFM For example, our 4’x3’x6′ grow tent has a CFM of 72 as a starting point.
• Adding a carbon filter (60 percent), ducting (20 percent), and a silencer (20 percent) to our ventilation system increases the airflow rate to 166 cubic feet per minute.
• Keep in mind that these percentages are not set in stone and may change at any time.

## Best 3×3 Grow Tent, Ideal Setup And Reviews

Three-thirds grow tents have the advantage of being quite inexpensive while also being extremely useful. Some experts even believe that a three by three grow tent is the ideal size since it allows you to maximize floor space while still having enough area to produce excellent crops.

## Best 3×3 Grow Tents Reviews

They have the advantage of being reasonably priced while still being quite functional. According to some, the optimal grow tent size is three by three, because it allows you to maximize floor space while still providing adequate area for the development of large, productive crops.

### Best Less-Expensive 3×3 Grow Tent

There is only one place to start, and that is with a grow tent that has already established itself as a leader in the industry’s repute. This tent is built to last, with a mylar inner that provides 99 percent reflectivity, a strong 600D exterior canvas, and high-quality zippers with concealing flaps for further security. There is a reflective, detachable floor tray that has been created, and it is really useful. An observation glass, which allows you to keep an eye on their plants without disrupting the surrounding environment, is also available on the second floor.

Another highlight of this grow tent is the process of putting it together. It is delivered with metal poles that include simple click connections, allowing for a quick and simple installation procedure.

###### Pros
• Steel frame and corners
• Viewing window with light filter
• Tempered glass. The product comes with a one-year guarantee and a replaceable mylar spill tray. It is packaged discreetly.
###### Cons
• Some customers have complained that the tent was difficult to put together

When it comes to quality and durability, this grow tent is unmatched in the industry. This bag’s outer shell is 600D canvas with a 98 percent mylar inner and heavy strength zippers with a two layer black lining for increased temperature efficiency. The heavy-duty crossbar is capable of supporting the weight of your grow lights, fan, and carbon filter without any problems. While the dual ventilation allows for either active or passive air intake, it does so while flawlessly sealing around your fan.

In addition, there is a detachable waterproof floor tray that makes it simple to integrate hydroponic systems.

###### Pros
• Strong steel poles and corners that connect with one other
• Various ventilation openings allow for a variety of configurations. Heavy research and heavy-duty metal zippers
• Floor tray that can be removed
###### Cons
• It is possible that some light will get through the zippers.

### Highest Quality 3×3 Grow Tent

This is the Original Gorilla Grow Tent, which is 83 inches tall and is the sturdiest of the bunch. With a thickness of 1680D, the fabric is thicker than any other grow tent now available on the market. Height extension kits can also be used to increase the height of the structure. You may stretch these even farther to create a grow tent with a 10-foot ceiling height. The second remarkable feature of the Gorilla Grow Tent is the heavy-duty zippers that wrap around the whole perimeter of the tent.

When you combine this with the extremely robust structure of this grow tent, it is easy to understand why it is considered to be one of the most dependable and long-lasting options available.

I’ve also evaluated Gorilla Grow Tents in the past, and I can recommend them without reservation.

###### Pros
• The highest level of quality available on the market
• Adjustable features allow you to easily raise the height of the bed
• And 1680D creates a growing environment that is safer, quieter, and odor-free
###### Cons

This is another another grow tent that meets all of the requirements. The cloth is both lightproof and extremely durable at the same time. There are multiple spherical vents available, each of which has a filter and can accommodate fans of varying sizes. Because of the tool-free metal connections, assembling the frame is a breeze, and you won’t have to spend hours poring through setup instructions. The heavy-duty, powder-coated steel frame of the tent provides additional support for the structure.

It also has a tear-resistant coating and is 100 percent reflective.

###### Pros
• Model that is simple to install
• Materials that are dependable and durable
• This is an exceptional reflection. Customer service that is second to none
###### Cons
• There is no viewing window
• There are various communication snafus with the brand

Finally, we’ll propose this grow tent from MAXSISUN, which is our last pick. It is small and has a multi-chamber design, which allows you to increase the amount of growth room you have. The use of zinc-plated poles and 600D fabric ensures that the product is of the highest possible quality. The structure is capable of supporting up to 120 pounds. Not only that, but the tent also comes with twin ventilation socks, which help to keep the tent’s ventilation fans and filters from becoming clogged.

Because of the micro-mesh ventilation openings, pests are kept out while light is allowed to pass through. As a result of the waterproof floor tray, cleaning is made simple as well as convenient.

###### Pros
• Design with many chambers
• Watertight floor tray
• Less expensive than other variants

## Best Grow Lights For A 3×3 Tent

After you’ve settled on the best grow tent for your needs, you’ll need to outfit it with the appropriate equipment. The grow light, of course, is the most vital of all of them. How many watts do I require for a 33 breaker? In order to cover one square foot for flowering, a standard LED will need roughly 32 watts of electricity. It’s probably between 250 and 300 watts for a 3 3 you’re looking at. The newest LED lights, on the other hand, provide higher light intensity (as well as better spectrum quality) while using less watts.

1. The following are the top two grow lights for a 3×3 grow tent: This grow light has a stellar reputation, and for good reason: it’s excellent.
2. This lamp provides just enough illumination for a 3/3 grow tent.
3. The light spectrum that this light emits is as near as you can go to that of natural sunshine without really being in it.
4. There is also a built-in dimmer switch that can be adjusted from five to one hundred percent.
5. It is possible to increase the amount of light reaching your plants without causing harm or scorching to them.
###### Pros
• Long service life
• Affodable
• Aluminum hood with high reflectivity
###### Cons
• There is little coverage. A screwdriver is required for dimming.

I’ve tested nearly every grow light available on Amazon, and Viparspectra is consistently the best value. It simply offers the finest quality-price ratio as well as exceptional performance at a reasonable price. This “zero noise” design is equipped with a durable aluminum heat skin that dissipates excess heat and keeps your lights from overheating while in use. It has enough covering to accommodate even the largest 33 grow tent without difficulty. It also has a dimming knob that is easy to operate, allowing you to change the light intensity according to your needs and the distance between plants.

###### Pros
• Outstanding value for your money
• The intensity may be adjusted with a knob
• The diodes are Samsung LM301B
• And the guarantee is excellent.
###### Cons
• For perfectionists who pay close attention to every detail, the light spectrum may be insufficient.

## Best Accesories For 3×3 Grow Tents

As you are undoubtedly aware, tents are used for a variety of purposes other than growing plants. In order to successfully produce cannabis indoors, ventilation and environmental management are essential. Listed below are the most useful accessories for your 3’3″ tent.

### Inline Duct Fans

When it comes to inline fans for a 3×3 grow tent, a 4′′ duct fan will suffice more than adequately for your needs. The majority of four-inch fans are capable of delivering sufficient CFM for grow tents of this size. To learn more about grow tent ventilation, visit mygrow tent ventilationguide. To summarize, you need between 130 and 190 CFM for a three-thirds grow tent. Here are two duct fans that will get the job done properly: When you consider that this fan has an adjustable speed range from 0 to 100 percent, it is remarkable to observe that it is absolutely silent.

No matter how quickly the fan spins, there will be no additional background noise or hum to worry about. Aside from that, you can anticipate a sturdy aluminum enclosure, energy savings, and compatibility for PWM and 0-10 VDC voltages.

###### Pros
• Design with intelligence
• For better control over your growth environment, a variable speed control is available. It is more quiet than other models.
###### Cons
• It’s possible that the CFM is too low if you’re dealing with extreme heat or humidity.

Vivosun is well-known for producing high-quality goods, and this particular model represents exceptional value for money. For the most part, this 4 inch duct fan is well-designed, yet some users have complained about the weak blades in particular. The motors are quite powerful and capable of quickly ventilation your grow space. The 190 CFM rating indicates that it can fit any number of plants and all environmental conditions that may be found in a 33 grow tent.

###### Pros
• The duct fan is well-built and comes at a reasonable price. With a 5.4-foot power cord and a speed controller already attached, installation is simple. Fan noise is reduced because to the use of plastic blades and housing.
###### Cons

When you want to keep the scent of cannabis plants under control, a carbon filter may be quite useful to have around (and boy, do they smell). You should absolutely invest in a carbon filter if you want to keep the fact that you are growing indoors hidden from the public eye. It is recommended that you use a 4′′ carbon filter for the airflow of a 33 grow tent. It will also suit the inline fans we discussed above. The iPower Air Carbon Filter is one of the most effective alternatives currently available.

This device is capable of creating airflow that has been completely filtered.

The device may be utilized as an intake or an exhaust depending on your needs.

###### Pros
• Flange that may be reversed for longer service life
• Materials of superior quality
• One of the most absorbent carbons in the planet
###### Cons
• Some buyers expressed dissatisfaction with the way the shipment was handled.

### Dehumidifier For A 3×3 Grow Tent

Efficacious, quiet, and compact: these are all characteristics you would expect from a dehumidifier for your grow tent. This product can be controlled with a single button, which can be used to turn it on and off. Alternately, if you need to micromanage your surroundings, you may utilize the timeframe to your advantage. When the 3 pint tank is completely full (with water from eliminating air humidity), you will be notified by an alarm and the dehumidifier will shut off automatically. Additionally, a little plastic hose for drainage is included, which is quite useful if you don’t want to utilize the tank or discover that it is too small for your needs.

And don’t worry, consumers have used this dehumidifier for small bathrooms, so you can be confident that it will work well in 3×3 grow tents.

###### Pros
• When it comes to a dehumidifier for your grow tent, you want something that is effective, silent, and tiny in size. Only one button is required to operate this device, which allows it to be turned on and off. Alternately, if you need to control your surroundings, you may set a timeframe for yourself. When the 3 pint tank is completely full (with water from eliminating air humidity), you will be notified by an alarm and the dehumidifier will immediately shut off. Additionally, a little plastic hose for drainage is included, which is quite useful if you don’t want to use the tank or discover that it is too small. Because of its compact dimensions (11.30 x 6.70 x 19.70 inches), it is ideal for our use in this situation. Customers have used this unit for tiny bathrooms, so you can rest certain that it is a fantastic dehumidifier for 3×3 grow tents, as well as other applications.
###### Cons
• First and foremost, the fact that they had to call customer care was discouraging.

## 3×3 Grow Tent Package And Kits

If you’d want to receive everything in one box while also adding some extra trinkets on top, a 3/3 grow tent package is a great choice. These are the greatest bargains available right now, and they include everything you’ll need to get started. Unlike other grow tent packages, this one from BloomGrow does not let you down. It consists of the following items:

• 4′′ Inline Fan + Carbon Filter + Ducting
• 300W LED Light
• Hangers + Hygrometer +24 Hour Timer + Shears + Trellis Netting
• 4′′ Inline Fan + Carbon Filter + Ducting

Not only does it include a premium-quality grow tent with 96 percent reflectivity and waterproof diamond mylar, but it also includes a grow light.

It also has an inbuilt fan, a grow-light, and a waterproof floor tray, among other features. Starting off, this is a wonderful option for those who want to get everything they need in one place.

###### Pros
• The grow light might be better, but at this price, it isn’t necessary.

This package includes one of the wonderful grow tents we discussed previously, as well as a variety of extras, such as an air filter kit, timer, netting, hand pruners, and much more! The Indoor Tent Complete Kit includes the following items:

• Rope hanger, hand pruner, trellis net, grow room windows, 7-day timer, and hygrometer thermometer
• 4′′ fan with carbon filter
• 8 feet of ducting
• 300W LED grow light

Every element has been carefully considered in the construction of this grow tent kit, ensuring that no stone has been left unturned. In addition, the installation process is incredibly basic, requiring no special tools to get started in the first place.

###### Pros

What determines how many plants may be accommodated in a 3×3 grow tent is entirely dependent on your growing strategy. You may, of course, let the plants to develop on their own. However, the goal of growing indoors is to make the most of the given space and light to the greatest extent possible. As a result, cannabis farmers typically employ one of the plant training methods listed below. Here are a few examples of plant arrangements per grow tent that have been shown to be effective.

• SCROG method: either one large plant or two little ones. LST technique consists of three to four tiny plants. The SOG technique may accommodate up to 14 plants, depending on how tiny the pots are. Ones for topping and prunning: one large plant or two little plants

## 3×3 Grow Tent Yield Examples

A 33% yield might be difficult to predict because there are so many variables at play. Under perfect conditions, you should be able to expect yields of between 8 and 10 ounces. With the correct strain, you may get as much as 12 oz. Actual output from a 3×3 grow tent, with only a few weeks to harvest. Because your grow light is one of the most important elements when it comes to production, you will want to make certain that you get the greatest one that you can afford.

## What To Look For When Buying A Grow Tent

The ability to protect your plants and manage the climate down to the smallest detail has been a life changer for many cannabis farmers, especially in light of the extreme weather conditions that have plagued harvests all over the world in recent years. If you are a first-time customer, we understand that deciding which tent to purchase might be a difficult decision. But don’t be alarmed! Let’s go through the essentials so you’ll know what to look for while you’re out shopping.

### Ventilation Ports

The most typical ventilation configuration I’m sure you’re aware of this, but ventilation is essential for maintaining proper temperature, humidity, and CO2 levels. This is critical for the health of your plants as well as the harvests they provide. Grow tents are equipped with a variety of ventilation apertures. A few of them are for active ventilation (inline fans), while others are for passive ventilation (mesh windows). Make certain that the intake and exhaust ports are positioned in a manner that is compatible with your grow tent configuration.

### Height: How Tall Will Your Plants Grow?

The most often encountered ventilation configuration The importance of ventilation in maintaining a comfortable environment for those with allergies and asthma is well known. This is critical for the health of your plants and the harvests they provide. The ventilation apertures on grow tents are available in a variety of sizes. It is possible to use some fans for active ventilation (inline fans) and others for passive ventilation (mesh windows).

It is important to ensure that the intake and exhaust ports are placed in a manner that is compatible with your grow tent configuration. They should be placed such that used air can be exhausted and fresh air can be drawn in (for example, the intake should not be placed against a wall).

### Poles Strength And Corners

As a general rule, the poles in all of these 3×3 grow tents are of sufficient strength. If, for any reason, you anticipate carrying greater weight than usual, seek for a tent with a steel pole so you can be confident that everything will be good. If you have a bigger system, or many grow lights, or a complicated ventilation arrangement, you might be looking at additional weight. If you intend to put a lot of usage into your grow tent and you want it to survive for many years, I strongly recommend that you seek for steel corners that have interlocking mechanisms.

### Quality And The Space Around Your Grow Tent

If your grow tent will be located inside your house and you have a consistent, pleasant temperature, you shouldn’t be concerned with the thickness of the fabric or the number of double stitching. However, you should be concerned if your grow tent is located in your garage, cellar, or any other location where temps are not optimal or where temperature fluctuations are frequent. A high-quality grow tent provides a more controlled environment for your plants. Your plants will benefit from more consistent temperature, humidity, and air exchange, which will result in much higher yields.

I do not, however, advocate leaving a grow tent out in the weather all of the time.

## Final Thoughts

So there you have it: a look at some of the top three-tiered grow tents available on the market in 2020. If I had to pick only one, I would definitely go with the CoolGrows 36′′x36′′x72. It has a lot of potential. This grow tent meets the majority of requirements while being reasonably priced, making it an excellent choice for novices. Please let me know if you have any queries for which I can provide answers! Best of luck with your growth.