-Eliminates the risk of vitamin D3 overdose from synthetic sources-Increases appetite and physical activity, while helping to induce reproductive behaviors -Safe and beneficial for use with all types of reptiles, snakes, turtles, tortoises and amphibians regardless of their UV requirements Brand: Zoo MedTHIS LAMP PROVIDES UVB, UVA and VISIBLE LIGHT FOR YOUR REPTILE: UVB:Reptiles need UVB for vitamin D production and calcium metabolism. Without UVB, reptiles can develop Metaboic Bone Disease in 6 months or less. This lamp, along with proper temperatures, will enable your reptiles to make viamin D and process calcium from their diet.UVA: Reptiles and amphibians can see things that humans cant. UVA is part of the rainbow of colours that reptiles can see. UVA helps to increase activity levels, appetite, and reproductive behaviours. Without UVA, they are colour-blind!LAMP DISTANCE: This lamp emits beneficial UVB up to 60 cm from the surface of the bulb. Glass and plastic filter out UVB; there should be no glass or plastic between the lamp and your reptile. Fine mesh blocks up to 50% of light and UVB. This should be taken into consideration when determining lamp distance. The T5 HO ReptiSun 5.0 is designed for most reptiles housed in terrariums that are 30 to 60 cm tall. Always have lamp at least 15 cm away from your animal.WHEN TO REPLACE YOUR LAMP: This lamp will provide your animals with beneficial UVB for a period of 12 months when used 10 to 12 hours per day. Record date of first use on lamp and replace after 12 months