I am new to this like you and have tried to get everything as right as I could,, many people have different ideas but all around the same ball park...
My set up that finally works is this, I have a 3 foot wooden tank, ceramic non light emitting bulb down one end, 3 hides, one in hot end ( temp 88-92 max) one in the middle, one in the cold area... water bowl, deep enough for her to go in if she wants, in the middle, not right in hot end, humidity is around 77% but lowering now she's shed to around 50%-60%. I have a humidity sensor in the middle, and temperature probes at the hot and cold ends...
I use bark and mist to get humidity up, now i have it all set up right i just mist in the morning, and this seems to work fine.. I noticed that layout of large log in tank makes a difference to how the heat grade works, so play around and also think about your rooms temps, and watch how they effect the tank when night comes, say at 4am and check it's all still stable at that time.
I have a probe attached to the thermostat about one inch above the bark substrate at the hot end right in the middle near under the Ceramic bulb... I tried it in different places but this positioning seems to work best for a constant gradient.
I have stressed a lot over the last two weeks, I think this is normalGood luck
![]()