Zoo Med's Moonlite® Reptile Bulb is the perfect bulb for viewing and heating nocturnal reptiles and amphibians. The bulb provides moonlight lighting so it doesn't interfere with your animal's sleeping patterns. It is made of a true deep blue glass (not painted or coated) for better heat transfer. Economical moonlight heat source provides beneficial UVA rays for the psychological health of reptile and amphibian species.