Ventilation is one of the most important parts of an indoor grow setup. A properly sized extraction fan helps remove hot air, control humidity, and keep plants healthy.
Choosing the correct fan depends on the size of your grow tent.
Recommended Fan Sizes
2×2 grow tent
4 inch fan
3×3 grow tent
4–5 inch fan
4×4 grow tent
6 inch fan
5×5 grow tent
6–8 inch fan
A fan that is too small may allow heat and humidity to build up, while an oversized fan can create unnecessary noise and negative pressure.
Improving Grow Tent Airflow
To improve airflow you can also add:
• Oscillating fans
• Carbon filters
• Proper ducting
At Grow a Pear Hydroponics, we can help you select the correct ventilation equipment for your grow setup.
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