I have an hygrotherm that turns off the light when it reach 93 degree on the basking spot and it also controls my fogger . For my uth I have a dimmer and I check the temperature in the hide by putthing the probe of my thermometer in it . So I should play with my dimmer to reach 84degree ? So far it was around 93 . Its been 2 weeks and he is almost always in this hide but he sticks his head out for a while sometimes . Now I guess it because its too hot .