I'm running 400 watts of hps and about 45 watts of cfls. The temps hover at 87 right now. Not great but not horrible either. I have a dayton 265 for exhaust plus two fans moving air around and into the dayton. I'm going to finish these two out and buy either a coleman cabinet from lowe's or a c-13 and a vented hood to get everything just right temp wise and give myself some more vertical room. 4 feet just isn't enough if you want to grow without training etc. Thanks for the kind words 6 more weeks to go!