Is that on a ceramic heater? See my cool end is a little to cool but the roof of the hide in warm end is 94f so I can't turn it up anymore! I think this ceramic radiator creates a basking area that is too large so anything underneath it is too hot on the roof yet needs turning up to up my cool end! I may change to ceramic bulb then it's got a smaller basking area directly under it so I can increase the overall temp on cool end... If that makes sense lol