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Message: [QUOTE="Claudiusx, post: 1970013, member: 31715"] Any bulb that produces visible light is also producing UVA. Some bulbs produce more UVA than others. But remember, even though your UVB bulb is mainly a UVB producing bulb, it too also produces UVA. Your dragon was never without UVA. Now, onto your original question. Your original train of thought was correct. The UVB bulb is already pretty high on the Kelvin scale. What linear UVB bulbs lack is the warmer color of the spectra. And if your goal is to emulate the sun, then you need to make up for that lack of warmer spectra. A 3-3.2k bulb is perfect for that. In the past we really recommended only a bright white basking bulb, but truth be told, if you pay attention to the spectra analysis of UVB bulbs and soft white bulbs, they actually compliment eachother very well and provide a spectra more close to sunlight than a bright white + linear UVB. -Brandon [/QUOTE]