Necessary UVB Rays.
Proper lighting helps to create the proper environment since reptiles use external sources to regulate their body temperature. Certain species need UVB ? part of the sun’s natural light spectrum ? to synthesize Vitamin D3, allowing them to properly absorb and metabolize calcium. Replicating the light they would receive in their natural habitats, each 13-Watt Intense UVA UVB Bulb 15.0 CFL Reptile Light Bulb provides necessary UVB rays to ensure optimal calcium metabolism and prevent or reverse metabolic bone disease.