So I've been doing a bit of research on lighting for my bearded dragon and I'm looking at this Zoo Med PowerSun UV Mercury Vapor Lamp 100 Watts, I heard that this light gave UV-B light as well as heat and that's why I'm currently interested in this light. During my research I found out that I was in need of a UV-B light to cover the length of the terrarium and I was wondering if this is still needed even though I'm going to use a light that gives off UV-B already or if it's sufficient as is.