I have a quick question about how to heat my 20 gallon glass tank. I found a 10 - 20 gallon UTH at the school my mom teaches at and they said I could have it. The problem is I am going to have to have a light to view the gecko cause its dark in the room im gonna keep it in. I was gonna get a small dome light to use but do I need to use the UTH and the light or just get a light for the heat source. The way I have it set up for my ball python is the UTH is on the warm side and the light is on the cool side to help maintain a cool temp of 80 degrees but im affraid that it might get too hot for the leopard gecko. The room temp is usually around 75 degrees.