Zoo Med's linear flurescent UVB lamps are made in Germany with the highest quality UVB transmitting quartz glass, with beneficial UVB emissions lasting a full twelve months! The UVB emissions from these lamps will help to prevent or reverse metabolic bone disease in captive reptiles, birds, and other animals. In addition to UVB, Zoo Med's ReptiSun , Iguana Light, and PowerSun lamps also emit beneficial UVA wavelengths which stimulate feeding, reproduction, and natural behavior patterns in reptiles, amphibians, and birds. Zoo Med's ReptiSun 2.0 has a high C.R.I (color rendering index) of 98! Brings out the color in your animals for optimum viewing. The ReptiSun 2.0 is the perfect lamp for all types of snakes or amphibians and nocturnal reptiles that do not have high UVB requirements. Emits UVA, which helps to increase appetite, physical activity, and reproductive behaviors, and is important to the physical well being of your animals. All ReptiSun 2.0's are T-8 energy saving bulbs.