Arcadia D3 Reptile for forest reptile species. Forest species such as the Day Gecko, require lower levels of UVB and should be kept under an appropriate sized 6% UV-B D3 lamp, which contains ample levels of UV-B radiation for such species. The Arcadia D3 Reptile lamp has a high UVA output (30%), providing all the elements which are so vital to the welfare of the reptiles. As a full spectrum lamp, the Arcadia D3 Reptile lamp simulates sunlight. This provides high colour rendering for enhanced viewing of your reptiles and their environment. The colour temperature of 6,500K replicates typical daylight conditions. The D3 lamp also helps plants grow in the vivarium or terrarium, where these are present.Arcadia D3 Reptile 6% UVB:15 W, length= 450 mm d= 26 mm18 W, length= 600 mm d= 26 mm30 W, length= 900 mm d= 26 mm36 W, length= 1200 mm d= 26 mm38 Watt, Lnge= 1050 mm d= 26 mm