A UTH with a thermostat? If not the temps are too high. Misting is fine if needed, usually only needed if you use lamps or depending on where you live. I never have to mist for my one tank and he always has prefect sheds. Over misting can be very bad, causing scale rot from damp substrate and also causes bacteria to build up.
http://www.amazon.com/Chaney-Instrum...0131380&sr=8-1