you want to exchange the air in your grow space every 5 minutes at the least, preferably every 1-2. as RT mentioned, go bigger than needed.

-shake
headshake Reviewed by headshake on . first time growing, need some help i dont want to buy anymore so im thinking of turning a small cabinet into a grow box, the only problem is that it is made of wood. would a layer of heat resistant material prevent it from catching fire? also what is a powerful yet silent fan? thank u Rating: 5