Building grow cab

have one with a filter...is that not enough?....lol well I guess its not if my temps ar 90 at times

i dont know.. im having probs w/ temps in mine as well so im really the last person to ask lol. Hope you get it solved.

"stay cool" ( lol )

try making a dedicated exhaust for your cabs ambient air. Or try removing the intake duct from the cooltube and try pulling the air from the cab out through your cooltube out of the cab through your filter if you dont wanna make another exhaust hole

Im trying that now hopefully it will work, ill let you know