vent your heated air coming from your lights into the attic with a carbon filter at the end. you will have to cut a hole out which can be patched up later. the carbon filter will take care of the smell
mobay Reviewed by mobay on . Temp prob. Hey guys, I got a temp problem and need to ask you guys a question. So the temp in my grow room is about 75 deg with 800w HPS. To reduce 75deg to 40-50 would I install a cool air hood for the HPS and a couple fans? The reason in doing so is that it has been really tight up here now that cops have been using thermal heating over house's to bust fairly large grow rooms, I want mine to stay about average if not a little bit higher. After all, this is my 9 clone room and I dont want it to Rating: 5