UVB5.0 SPIRAL ENERGY SAVING LAMP15W. It is suitable to all reptiles with moderate requirements on UV ray in tropical andd sub tropical zones, such as IG, furcifer pardalis, red legs, Myanar, radiation, star tortoise, continental tortoise, etc. it combines with calcium powder to induce the activation of D3, promote the transformation of calcium in bone and blood. it improves appetite, makes the animals acive to induce coupling behavior. effective firing range reaches 30-40cm. it is recommended to be combined with fluorescent lamp UVB 2.0. the energy saving lamp gives out moderate UVB, just as the ray in the shielded environment in the simulated tropical rainforest. the reptiles living in rainforest are rarely exposed to the ultraviolet ray radiation. because sunshine cant direct arrive to animals and their sunbathing places due to many factors. Some ultraviolet ray is filtered due to high humidity.