Pet Exo Terra Repti-Glo 10.0 Compact Fluorescent Desert Terrarium Lamp - 26-Watt. Incadescent, Heat Supply Store/Shop Ideal for all desert dwelling reptiles Helps simulate environment of a natural desert Ultra High UVB output, effective up to 20" Recommended for use with screened terrariums and terrariums with dense screen covers Provides necessary UVB rays for optimal calcium metabolism