I have a closet that is approximately 3 x 3 where I am running a 250 hps. It is hot as hell in there--approaching 90 some days despite all the ventilation I can muster up as well as leaving the door open when I can. The plants have not suffered much because I can usually leave the door open with a fan blowing on them, but this is obviously not discreet and I am wasting lisght with the door open.

I want to make a Pyrex Bake-A-Round cooltube to concentrate the heat through my exhaust ducting/fan thingy, and I am wondering how much cooling off to expect from it. Like 10 degrees, or 2 degrees?

Also, how about one of these? Sun Systems - - Sun Shield- Cool Sun XL 8" How much relief do you think that might give my girls?

Thanks ya'll.
Sprite Reviewed by Sprite on . How much to expect from a Pyrex cooltube? I have a closet that is approximately 3 x 3 where I am running a 250 hps. It is hot as hell in there--approaching 90 some days despite all the ventilation I can muster up as well as leaving the door open when I can. The plants have not suffered much because I can usually leave the door open with a fan blowing on them, but this is obviously not discreet and I am wasting lisght with the door open. I want to make a Pyrex Bake-A-Round cooltube to concentrate the heat through my exhaust Rating: 5