The Exo Terra Reptile Glo 5.0 has a moderate to hight UVB output, similar to that of shady environments such as rain forests and other tropical locations. Reptiles living in these habitats receive less UV radiation because of the many climatological conditions (fairly high humidity, changes in weather etc) that prevent direct sunlight from reaching them or their basking sites. Ideal for all tropical and sub-tropical reptiles. High UVB Output. Effective up to 30cm (12inches). Provides necessary UVB rays for optimal calcium metabolism. Stimulates appetite, activity and reproductive behavior through UVA radiation. Recommended in combination with Repti Glo 2.0 for a higher visual light output.