Grow Fans  

Fans are a simple way to help boost productivity and can be placed quite close to mature marijuana plants. The breeze helps them grow stronger while also circulating air flow. A good fan is also necessary for active ventilation, as you should aim to replace the air in your grow room at least once a minute.

Learn more:
How to choose the right grow fan
 What temp. should my grow room be kept at?
 What is the difference between oscillating and inline fans?

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