Hi thanks for the responses guys,

I think at the least im going to pick up another identical hide. I am doing day and night cycles about 12 hours each on a timer. The UTH is on the side under the basking light. I think the swing in temperature is mainly down to the size of the tank, im trying to put foil round the top now.

Moving the thermometer under the substrate gives me like a temp of 115 on teh heat pad, is this too hot or does the substrate cool this off enough?

I am having trouble attching a picture but i'll try to get one up