Thank you. Where is Cornel's World located?
(Where he sits under the heat bulb is around 85F actually. There's not much I can do to warm up his "warm" side any further without cooking him... it's only a 15gal aquarium - with 50W red bulb. He does have a UTH, like I said, set at 90F but prefers not to use it!)
EDIT: Forgot to mention, that I measure the temps near the floor of the vive where he sits (78.5-81F), but he can climb closer to the mesh lid where the heat bulb sits outside, which is where the 85F comes from.