80 degrees is the ambient air temp How do I increase that? We have a 150 watt basking bulb and its on for 12 hours a day and the temp never reads higher than 80 except when it is hot in our house. She has been in the same enclosure for the past few years that her previous owner had her in when we got her, she got moved to our house in the same enclosure and all we did was cleaned it out and provided a new hide and changed the location of her water, like I said she had stopped eating for him for 6 weeks before we took her. I do have a zoo med reptitherm thermostat and heater, it doesn't have a temp reading though just a dial that goes from green to red, we have it set in the orangish red section, should we put a thermometer on top of the uth to measure the temp or how do we do that?