Get a dimmer switch from home depo to regulate the temp of the UTH. I also got a temp gauge from there and put the sensor on the UTH so you know the exact temp of the UTH. You dont want to burn your BP... The temp gage I got shows humidity too.

Personally I dont use lamps because it drys out the air in the tank, and dry air will make it tough for your BP to shed. I use 2 under tank heaters and have two separate temp gauges to monitor the heat. When the temp inside my house goes up I will see him move from one side of the tank to the other because he gets too hot. I never let the hot side exceed 95 and the cold side below 70. I am usually at 80 cold side and 90 hot side. I have a hide on each side of the tank so he can be comfortable and hidden no matter what temp he prefers.