3×3 grow tent how large inline fan

1. Why do 3×3 grow tents need inline fan?

The role of exhaust fans is just like your room needs to open windows for ventilation. All living things need fresh air. The space of the grow tent is closed, and exhaust fans are needed to exhaust the exhaust gas if you want air circulation. This can ensure the health of the plants and ensure that the humidity does not continue to rise.

inline fan can also help regulate the temperature. Especially when using **grow lights**, the temperature may rise rapidly to a level that is not suitable for plant growth. Exhaust fans can take away this heat and maintain a comfortable growing environment.

2. How to choose an inline fan suitable for 3×3 grow tent?

You should know that it is not difficult to choose an exhaust fan that suits you. The only knowledge that can be used is the concept of “cubic feet per minute (CFM)”.

In fact, the higher the CFM, the greater the wind force of the exhaust fan. Of course, the faster the air circulates. For 3×3 tents, the CFM range I recommend to you is 150 to 200. This is actually enough to ensure that the air will not be stagnant.

3. Other factors determining the size of the inline fan for a 3×3 grow tent

Of course, choosing a fan is not just about CFM, there are other small details to consider:

3.1 Heat from grow lights

If you use high-power HID lights, the temperature in the tent will rise faster. At this time, you may need an exhaust fan with a slightly higher CFM value to help quickly exhaust the heat. For example, your CFM is originally 150, but because the heating effect of the lamp is obvious, you may need to increase it to 200-250CFM.

3.2 Humidity control

You should know that many plants like dry environments. But unfortunately, the grow tent is airtight. So the carbon dioxide produced by your plants’ breathing cannot be discharged, which will make the environment humid. If the humidity is high for a long time, it will also easily breed bacteria. At this time, the importance of exhaust fans is reflected.

3.3 The existence of carbon filters

Many plants have odors, so you need to install carbon filters. After all, no one wants their house to be “stinky”. But if a carbon filter is installed, it will slightly reduce the efficiency of the exhaust fan. So you need to buy a more powerful exhaust fan. It increases the power by about 25%.

4. Which inline fan is more suitable for 3×3 grow tent?

Exhaust fans come in different brands and types, and the price range is also very wide. You can refer to the following points when choosing:

4.1 Noise control

No one wants to hear whirring in their ears all day long, especially when growing plants at home. Fortunately, there are many low-noise fans on the market that can ensure efficient ventilation and allow you to enjoy the fun of growing plants quietly.

4.2 Easy to install

You don’t want to buy a fan and find that the installation is more troublesome than assembling IKEA furniture. It is simply a nightmare for hand-made novices. It is best to choose an exhaust fan with a clear installation guide and a fool-proof installation process, so that you can get started in one minute.

4.3 Durability

A high-quality fan can not only save you the trouble of unnecessary replacement, but also keep your plants “breathing smoothly” for a long time. Generally, metal shell fans are more durable, while plastic ones are cheaper, but their service life may be discounted.