You don't need UV, it has not be proven to change anything with monitors. Im not saying it may not have a positive effect but True breeders (not dealers) of monitors have successfully bred, hatched animals for many years with no uv lighting. Even some breeders that have used uv lighting said they haven't seen anything different.
To be honest i will be putting most of my monitors outdoors for a few hours in the summer time when im home as it may be use full to them and i want to give them a larger area to roam.

Bryan