I just fired up this cabinet again after being shut down for a while. Last time I ran this, I used a 250W HPS with a remote ballast. I got good results, but the heat was hard to control. This time I'm using a 70w HPS and two 42w (actual wattage) CFLs, and the temps are much more consistent. I popped these a couple of weeks ago; the one straggler still in the peat pellet took a few extra days to germinate. If this run goes well, I'm thinking I'll replace the CFLs with 50w HPSs.