Keep your reptile happy and healthy with the Vibrant Life Compact Fluorescent Bulb for Reptiles. This 13-watt bulb provides essential UVB rays for pet reptiles while maintaining lower levels of safe UVA. This fluorescent bulb has an excellent UVB to UVA ratio and provides beneficial UVB up to 6 -11 from the lamp to the basking site of the reptile. The lamp should be placed outside your reptile s enclosure. For optimal health provide your reptile with a 12 to 14-hour light cycle. Using a 12 to 14-hour light cycle your bulb will produce sufficient UVB rays for 12 months. Make sure your reptile is happy and healthy with the Vibrant Life Compact Fluorescent Bulb for Reptiles. Help your pets live the Vibrant Life! Our products are specially crafted with one goal in mind seeing your pet at its very best. With a variety of offerings designed to keep animals healthy happy and energized Vibrant Life stands out as the brand that truly puts your pet first.