Similar subject in another thread.
http://ball-pythons.net/forums/showt...90#post1777290
You can secure your probe to the inside of the tank against the glass, but you really need to make sure it's secure. Hot glue seems to be the adhesive of choice for doing this. Just make sure you don't use tape.
EDIT: You were editing while I was responding, so feel free to ignore the fact that I ignored your edit![]()