Change your vet; ball pythons do not need any light source other than what naturally enters their environment. Did your vet inquire as to whether you had your UTH hooked to a thermostat? Do you know what the temp in the environment is? Could you share what your snake's set-up is; ie. cage, tub, tank.... Can you share why you took your snake to the vet? Maybe a picture of its enclosure would help us to help you since more information regarding your husbandry allows for more accurate suggestions!![]()