UVB lights are one of the most essential tools to provide an ideal environment for your sun loving reptile. Most reptiles require UVB light to naturally provide vitamin D3 which helps them to process the calcium from their diets. Without it, there is an increased chance that they will suffer from Metabolic Bone Disease. We carry the Arcadia line of UVB light bulbs which is world renowned as being the best of the best. We also carry Zoo Med Powersun mercury vapor bulbs as well as a complete line of fluorescent and compact lights. If you want to get serious about UVB, we have the Solarmeter 6.2 which will allow you to monitor your UVB reptile bulb's performance and let you know when it's time to replace them.