What are you heating it with? What are you measuring temps with? You should have a digital thermometer to measure cool side(80-84 degrees) and warm side(90-94 degrees) with an ambient(air) temp of at least 75 degrees! You should have 2 identical hides, one of each side! You may want to cover the sides and back for added security! You should have an under tank heater for the warm side. If you can provide pics of the tank than we can help you more in detail!