The Iguana Light is an ideal UVB source for all Iguana species, as well as other diurnal lizards. A full 5% UVB output allows vitamin D3 synthesis to occur naturally, preventing or reversing MBD and other health problems in turtles and tortoises, Bearded Dragons, Iguanas, and all other diurnal reptiles. Additional Information: 5% UVB 30% UVA