you just made this whole thing a hell of a lot harder. I had my finger on the trigger ready to order the 129 HPS system from htgsupply cause its dirty cheap but im scared shit of heat and seeing those nuglets you got with cfls are making me wonder and drool. Is heat buildup outrageous with the 400 watt hps? or even 400mh? Like if got too hot, is fire likely, do they just shut off, am i asking for fire putting it in closet. I was going to maybe put a blower on bottom. like the floor drying type so it could vent out of 2inch crack / space underneath door on bottom. Would i have to do the same with 2-4 cfls, put the blower cause they also get hot?