In most opinions you'll find on bp housing, a 50 gallon tank can be extremely overwhelming to a bp. This can cause stress, and feeding refusals. These guys really dont require a huge amount of space and tend to do alot better in smaller enclosures. In the wild they spend the majority of the time burrowed. Judging by the size in the pic I would downsize to a 10 gallon with a locking screen top and get 2 appropriate size hides (place 1 on the hot side and 1 on the cool side) and purchase an appropriate size UTH and a thermostat ( on the lower priced thermostats the zoomed 500R should do the job of controlling the UTH) from a reputable pet store and place the UTH on one end of the tank to create a "hot spot" . You will want the hot spot on the inside of the tank to read in the lower 90'sF. you may also want to cover 3 sides of your tank with black construction paper or some other dark material, this will typically make the snake feel more secure.