exhaust fan!?

J

Jlee1990

Well-Known Member
quick question people, my exhaust fan is half way up my grow area and wasnt sure if it would make much of a difference in my temps if i put it right at the top of my grow space sucking hot air out? plz help :)
 
J

Jlee1990

Well-Known Member
do you think itl make alot of difference in my grow space then mate if i put the exhaust fan at the top? because its pritty much facing my light at the moment? :)
 
C

cabinetgrower

Member
Yeah man, get that fan right up the top! Even if its at light level theres sure to be hot spots at the furthest distance from your fan where the hot air is rising straight up and forming like a layer at the top of your cab.
 
J

Jlee1990

Well-Known Member
the exhaust fan is screwed onto my ceiling now exhaust the hot air, but because weve got a heat wave the temps reach 36 degrees, do you think the temp will drop back down when the weather cools because im running through the day?
 
J

Jlee1990

Well-Known Member
dont have any intake at the moment, but i leave the doors to the wardrobe open with a oscilating fan blowing directly onto the light.?
 
Sharkey

Sharkey

Well-Known Member
Generally you want it sucking the hot air out the top of the tent however how much of a diffrence it makes depends on the size of your grow area and the fans CFM
 
1

12bonsai

Member
Jlee1990 said:
well its a 3ftx3ftx6ft, my exhaust fan is 4'' and its cfm is about 137?
Click to expand...
That will exchange the air twice a minute. I like to have 4-5 times a minute. Maybe a 6" fan will work better.

Also if you are exhausting in the middle of the room add an elbow and some straight pipe to suck it out from the top. Have your intake near the bottom. Also remember the angle will reduce the cfm.
 
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