texastiger707
Active Member
I have a grow tent that is 32x32x63. I have a 250 watt hps light with a 6inch cool tube. So what size fan would be good for cooling my light and tent down? I am asking what CFM would be good. I have seen 160, 200 and 400.
what fan CFM would be good for my tent?
- Thread starter texastiger707
- Start date
bazookajoe
Well-Known Member
Seeing as how u only have 33 ft3 any/all the ones mentioned will work. Go bigger cfm and speed controller if u plan to upsize grow space. If not, a 4" INLINE fan n filter will b just fine.
texastiger707
Active Member
so you mean a good fan not a duct fan correct?
texastiger707
Active Member
something like this?
bazookajoe
Well-Known Member
U got it.. r u gonna have a prob with havin the light diagonal? Ur gonna need a cpl 4x6" duct reducers for the ends of ur cooltube and with ur tent bein 32" square its gonne be to long with the reducers attached for straight across the tent, unless uve got the 19" tube then ull be alright to run it however u want.
texastiger707
Active Member
I will have to get a 6inch fan.
bazookajoe
Well-Known Member
Get a speed controller as well, u might wind up with to much negative pressure and 400+ cfm really isn't needed but better to have to much than not enough.. keep it green
Darkjasper
Member
I have a 6" cooltube with a 6" 460cfm inline fan with a speed controller. Works very well, speed controllers are a must. I have it running at half right now and it still pushes a decent amount of air. Picked up my inline fan on craigslist for 50 bucks, way cheaper then what retail or online prices will run you.