I am baffled on fans needed to cool a grow room

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babcock307

Active Member
i have 3'x3'x7' room (72 cubic feet) with a 400 watt HID lite.

OUTAKE: I have a 95 cfm squirrel cage fan pulling from a can filter and thru the glass enclosed lite w/open ducts on each end. Then a 160cfm inline duct fan on the other side of the room pulling air out the window.
INTAKE: I have two 80 cfm inline duct fans pushing air in (2 ft. from window to grow room) With all this I have a 86 degrres and 19% humidity --ouch!! Please advise!!:?:
 
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howdyguhk

Well-Known Member
do you live in Canada? what temperature is it outside for you?
and does your exhaust and intake run through the same window?
 
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babcock307

Active Member
i'm in US --temps are in 60s today. intake and outake go out same window --kept apart and pointed in different directions --thanks
 
redi jedi

redi jedi

Well-Known Member
babcock307 said:
i have 3'x3'x7' room (72 cubic feet) with a 400 watt HID lite.

OUTAKE: I have a 95 cfm squirrel cage fan pulling from a can filter and thru the glass enclosed lite w/open ducts on each end. Then a 160cfm inline duct fan on the other side of the room pulling air out the window.
INTAKE: I have two 80 cfm inline duct fans pushing air in (2 ft. from window to grow room) With all this I have a 86 degrres and 19% humidity --ouch!! Please advise!!:?:
Click to expand...
Where is the exhaust from the cage fan going? It sounds like back into your growroom? If this is the case your heating the room, not cooling it. Even with the 160 venting. Also, if there's no filter on the 160 your venting odours outside!!

Post a pic of your setup or explain in more detail......
 
dadio161

dadio161

Well-Known Member
maybe try pulling intake air from the floor in the main room instead of the hot air from outside. Thats what I am now trying and my temps average around 78 to 80 degrees. My plants almost touch the glass.
 
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