some people believe BP's require sunlight exposure (UVB) like a lot of other reptiles. This is simply not the case as they can go their entire lives in the wild never having seen direct sunlight. I had this argument with an "exotics" vet the other week...he more or less shamed me for not having a UVB on my ball python, and I simply told him they are nocturnal, there is zero need for one lol.