Reptile uvb lamp wavelength of 280 ~ 320nm. When exposed to Reptile uvb lamp, many reptiles synthesize vitamin D3 (or more specifically, vitamin D / cholecalciferol) in their skin. The optimum range for the synthesis of vitamin D3 from reptiles is 290-315 nm. Because some reptiles seem to rely on skin-made vitamin D3, can not use the D3 contained in the food. Therefore, vitamin supplements can not meet their needs. Instead, these reptiles must be in the sun or under the light bulb emitted by UVB.
Which animals need Reptile uvb lamp? As far as we know, a long time to bathe the sun reptiles need UVB in the skin to produce vitamin D3. Examples include most of the semi-water turtle and day and night (day activities) lizards, as well as all the turtles and crocodiles. Some of them seem to be able to use dietary vitamin D3 at different degrees, but the details are lacking, and if you reject UVB exposure, most of them do poorly. Snakes, common turtles and other water turtles, and night lizards (ie leopard gecko) can get D3 from food. If there is enough D3 in the diet, Captives usually have no UVB light. Many if not all can also be made on the skin D3, so UVB bulbs may be used as "insurance".
Amphibians use dietary D3, and most do not seem to require UVB exposure. However, there is some evidence that low levels may be useful for poisonous frogs and other day and night species. As field studies have shown that plant coverings do not block all UVBs, day and night amphibians will be exposed to some. On the other hand, some amphibian skin and eggs contain chemical substances that filter UVB. http://www.nomoypet.net/
