I'm using a ceramic heat bulb I arnt sure on the power as it came with the vivarium the cold side stays around 78 and the hot side fluctuates between 86 and 90 I'm using a 300w komodo thermastat.
I'm having to spray down 3 to 4 times a day to keep the humidity around 55 otherwise it drops down to 40 I'm going to look for a moss box on the weekend to help the humidity and think I might as well try another cave hide for the cold side like I say he will go to the cold side when needed but he's always on top of the hide when he does he's quite hidden when he does as I've some wood resting on the hide which he hides behind but just never goes in the cold hide