Yea.. stress makes that happen. My bp was in a single tub and he would try to push the lid time to time even though humidity and temperatures were on spot. He would skip meals time to time. However, when I moved him to an enclosed rack, he eats like a champ. My guess is that he needs more safety spot, meaning more places to hide. I even had two hides in the tub but he would still want to try to escape, and I think the light in the room might have stressed him out.