Well you vet would be wrong in this case, hehe. Ball Pythons stay on the ground, so the most important thing is the ground. I have cages at home with just under tank heaters and the ground is perfect, 93 on the hot side, 77 on the cool side. You don't need any over head heat, all those UTH's are perfect, you just need to control them with a dimmer switch or a rheostat.