I'm ordering a new UTH for my new tank. I assume that the UTH should take up the entire width of the warm side under the hide. Kinda seems like a silly question as I'm typing it out but I figured I'd ask and see if anyone mentions any tid bits of information that I might have not known about.
The tank is 36"L x 18"W and I'm looking at getting an UTH that's 11"L X 17"W