Im using a ZOO MED thermometer that also reads humidity. I took the 100w bulb off and put replaced the 60w with a 65w. Im getting a constant 80 degrees with the 65w. I just hope the little guy is comfortable, when he isnt sleeping, hes trying to look for a way out.
link to thermometer: http://www.amazon.com/Zoo-Med-Econom.../dp/B004PBB1JE