Quote Originally Posted by Eric Alan View Post
My only thought, and even this is a stretch, is about the glass aquarium. Do you have the sides and/or back covered to give him a little more security? If not, maybe there's something outside of the tank that he doesn't like on the warm side for one reason or another.
That was my thinking process too. So I gave him a rather long string of vines... But the sides are not covered -- will do that ASAP.

The only reason I worry is my other BP (normal, 36", 650g, age unknown but seems to be a young adult) is almost always "chills" in the hot hide. The temps in his enclosure are more stable but he has identical set-up on a bit bigger scale...
Different personalities due to age/size maybe?