Well made my choice to get the t5 HPS combo. Will let you know how it works. Right now if I run fans with one CFL the temp gets down to 64. so hoping with the HPS and the fans going the temp will even out to 80 or so. I am also getting a 265 cfl fan that should help. I have also thought about tweeking thre light fixture to attach some vent hose flanges. Will post how it goes.