im thinging hes a hatchling so 10 gal is fine and it also is the reason y hes prob not eating f/t to switch him over u need a good feed response witch will only get better in time as he grows u should try and feed live the 1st 3 or 4 feedings to get his response up .. as a hatchling he could eat anything from a mouse to a rat pup .. if the humidity is a problem u can cover some of the screen with a towel or plastic wrap whatever works for u .. hes gonna roam hes ina new place .. when he gets comfortable he will live in his hide all day