I found a short in one of my connections as well so the dark stage went a little long on one night,(like 10hrs) what a f*ck up. yeah I know what you mean about the height... I think I underestimated the growth in the flowering stage also, the heighth of my styro-room is a little low. but I rigged it so the MH isn't even IN the room therefor keeping the heat out also. Yeah I'm really disappointed w/the CFL's. I'm useing them in the flower room also but it's really just to balance out some shadow-y areas. I could really use a MH bulb for VEGing or something more. I am going to also try UVB light in the flowering stage soon.