Just like we need the sun, reptiles need specialized lighting in odrder to thrive. Without proper lighting reptiles can become sick and develop metabolic bone desease. With our safe and effective ReptiSun lighting, your pet can live a long, healthy life providing years of enjoyment. This lamp emits beneficial UVB up to 12 inchesfrom the surface of the bulb. Used and recommended by zoos, veternarians, and top reptile professionals.