ive tried the halogen flood and clear 150 w bulbs, but the temp doesnt get up much passed 100. is it just a matter of distance? are we sure he wont burn himself? the cool side stays at 80. and my house doesnt ever get below 72 anyways.my enclosure is 12" wide, 4ft long and 23ish deep. i bought some sandstone pieces and built a hill for him and the bulb is about 6" from him. i have a strip lite uvb on the other half of the tank. thanks for any info. hope to learn and participate.