I have a thermostat on the tank itself......is that enough? I was wondering if this would indicate he was ready to shed. He hasn't shed since I got him. I will check humidity levels....I just picked up a hydrometer. What should I keep it at? Also, I read about using a humidity box (with wet moss)....wondering what everyone's opinion is of that. The top of his tank is just a screen covering. Thanks for all the quick responses!