i don't use a heatlamp, i have a che on my coolside, and a uth on my warmside, i had the small exoterra water dish in there, the one that looks like rock, i took it out and put in my large terra dish, that the girl at the pet store suckered me into btw lol, the large dish is in the middle towards the cool side with about a half to a quarter of the water dish under the che, it's keeping my humidity around 60% with no misting, im finally gonna post pics tonight, cause ive been waiting for 2 weeks for my wife to get my digital camera back here