Zoo Med Moonlite Reptile Bulb, 40 Watt. Zoo Meds Moonlite Reptile Bulb is the perfect bulb for viewing and heating nocturnal reptiles and amphibians. The bulb provides moonlight lighting so it doesnt interfere with your animals sleeping patterns. It is made of a true deep blue glass (not painted or coated) for better heat transfer. Economical moonlight heat source that can provide 24 hour heat.