I use 2 accurite one in each side warm, cool, and I also have a fluckers on the side of the tank on the cool side. Cool Side measures anywhere from 80 to 83 and warm side is 89 to 92.5 it bounces around since i dont have a thermostat yet. As I am typing this he is in his tree hide which is a good size for him I think he just fell in love with that hide lol and doesnt leave it. Hes always near it and hides only in that hide.