Quote Originally Posted by frostedwonder
Okay to try to clear up my question earlier. Is it okay to leave one tube off an air cooled hood and have a inline duct fan pull box air out of box thru that tube over the bulbe and out box?:jointsmile:
If I understood your question, YES.

Leave one end of the cooltube open (exhaust system's intake), and then the tubing goes out the other end, to a fan, out the closet (exhaust system's exhaust)

I think that makes sense...:stoned:

Still have heat problems??? That's strange, sounds to me like your fans aren't working efficiently. Can you re-configure your ventilation in a way that you minimize bends in ducting? How about the ballast for your hps, is it in the growroom? Can you mount it somewhere outside the grow area?