My box is 4x4x6' tall. I have a 6" exhaust in the top with a 6" Voertex fan. How much passive intake should I have? Now I have 3 four inch intakes (12") & I do have some negative pressure which pulls my door shut. Can/should I put more intake air? I'm trying to get my temps down too...
Grow box exhaust
- Thread starter Bobgrowt
- Start date
freddythekruger
Well-Known Member
what i do is just listen to the fan. if it sounds like its struggling or its louder when its exhausting than when its just in the room then make the intake bigger. i dont know if i said that right. hope i could help.