A few hints and products I am working with... I do not stick the U.T.H directly to the tank, I get a piece of 1/8" aluminum and cut it just larger than the heat pad, this diffuses the heat and stores some heat also so cycling of the thermostat is less frequent. this also makes it easier to clean the tank in that you do not have to worry about getting the U.T.H wet. just place it under the hot side of the tank. I cover about 80% of the screen top with plastic wrap, and I also use cyprus mulch which holds humidity a little better. As far as thermostats, I have been trying out the Zoo-Med 500R, any comments on them would be appreciated, but they are inexpensive at about $30 a pop, I get two, I set the first one to 92 degrees and plug the second one in to the first set at 90 degrees, then I plug the heater into the second thermostat. If one were to fail, the thermostat of the first will shut down when the temp reaches 92, so if one fails, the other compensates. So far this has worked well for me...hot side, 90 ambiant around 80, and humidity fairly constant at about 70% with the digital hydrometer/temp that cost $14

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