Compact Fluorescent UVB Bulbs are self-ballasted and fit in Exo Terra Compact Tops or Exo Terra Mirror Dome Lamps. The spiral shape of the bulb enables vertical or horizontal mounting without compromising performance. These bulbs produce both UVA and UVB, which greatly improve the well being and health of captive animals. Bulbs come in 2.0, 5.0, and 10.0 models, with the higher numbers emitting more UV. Compact Fluorescent UVB Bulbs produce usable UVB at a greater distance than Fluorescent UVB Bulbs and should be changed every 6 months. When using Compact Fluorescent UVB bulbs, make sure to provide your pet with a way to get out of the UV rays if it feels the need.
Not all reptiles and amphibians require the same amount of UVB to be healthy. Exposure to sunlight will vary greatly depending on species, their natural environment, and their habits in the wild. Many species of reptiles and amphibians are nocturnal or live in burrows or on the floor of the rainforest, such as crested geckos, leopard geckos, or poison dart frogs, and are not exposed to significant levels of UVB in the wild. For these species, low levels of UVB, such as 2.0 bulbs (now the Exo Terra Natural Light), (or none at all!) are sufficient. Some species, such as many chameleons, live in forests, where much of the sunlight is absorbed by foliage. For these species, a moderate level of UVB, such as a 5.0 bulb (now the Exo Terra 100), is appropriate. At the opposite end of the spectrum, there are reptiles that thrive in full sun environments, such as deserts. Common pet lizards such as bearded dragons and uromastyx thrive under intense UVB expose from 10.0 Bulbs (now the Exo Terra 150, and even stronger Exo Terra 200).