It is about the time that I need to buy another UV bulb for my beardie's cage but, after reading a few articles, I'm not sure that the setup that I have is the best. I have a normal (T8, I think) bulb and hood sitting on top of my 40 gallon cage's screen top. I saw that people say that a High Output bulb would be preferred to a T8, and also that the screen at the top of the cage would filter out a lot of the UV. I though maybe that I would buy a T5, 24" tube light fixture, and use a long strip of Velcro to attach it to the glass walls? Or would getting a HO bulb and hood be enough even filtering through the screen? If you get this information to me quick enough, I might be able to convince people to get it for me for Christmas and save me fifty bucks .