Yes, beardies need that UVB, need to get one asap if they have not been having one at all. No night time bulb either, it does disturb them as they have a "3rd eye" on top of their head that senses light. I run a UVB light and Basking light only in my tanks for them, basking spot is about 110 degrees, they like it hot. I have them in my room so even if I'm still awake watching tv or on the PC, I'll cover their tanks with a blanket to keep the light out.