Are you talking about humidity (%) or temperature (degrees)? How old is he, how long have you had him/her, has he ever eaten for you, what kind of thermometer do you have (digital, stick on analog, etc), where are you measuring temps, what shape are your hides (some bps prefer round hides), are they too big (hides need to be low and snug).....provide a little more info and we'll better be able to help. Got any pics of your setup?