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Quote Originally Posted by POHNNY
I have a 40"w x 43"l x 82 1/2"h,(approx. 82 ft./3) insulated enclosed space inside my unheated outdoor shed. I live in the Northeast U.S.. Winter temps can go well below freezing (32F./0C.) I planned on using a 400w HPS/MH light, My exhaust fan with carbon inline filter is rated for 65cfm. .I have a 28 in/2 inlet opening with damper, Can someone please tell me what my grow room temp will be. And would it be o.k to not have a constant air flow exhaust working ,but hook the exhaust system to a temperature controlled device, that would only come on when temp gets to high inside box.. I was thinking of setting exhaust temp to come on at 70F. and turn off at 78F. Or will grow box ever get up to ideal temp of 70-78F. ????? Getting frustrated with little or no info on this subject. Thanks.
Well its a hard question to answer, but id think you could rig up the fan with temp controls easy. And im thinking in an hour it will kick on too if its insulated, with out any really good out take, it will get hot in there. Hell just one set of 4 cfl's keep my room up close to 78 degrees. So your 400 will get hot, if you could pull air from the top it would help id think. And use a small heater with a thermostat in it would cover you if it gets too cold. So both working or when needed rather, you would have complete control id think. I live in the same area so i know what your trying to do and sounds like a good idea to me:thumbsup:




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LetsSeeYa Reviewed by LetsSeeYa on . Is there anyone out there ??? I have a 40"w x 43"l x 82 1/2"h,(approx. 82 ft./3) insulated enclosed space inside my unheated outdoor shed. I live in the Northeast U.S.. Winter temps can go well below freezing (32F./0C.) I planned on using a 400w HPS/MH light, My exhaust fan with carbon inline filter is rated for 65cfm. .I have a 28 in/2 inlet opening with damper, Can someone please tell me what my grow room temp will be. And would it be o.k to not have a constant air flow exhaust working ,but hook the exhaust system to a Rating: 5