In another thread, someone asked if there should be a drop from daytime temps to nighttime. How many of you do this? Are you using heat/basking lamps? I use a heat mat, and when it's not running, the temp drops to room temp, 69 in the winter! My thermostat isn't working right, and will soon be replaced. I've got it turned all the way up and the heat mat maxes out about 85. Unregulated, it got over 100 though!