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So for the natural self-limiting process to occur, preventing excess and potentially damaging levels of vitamin D3 formation, a full spectrum from shortwavelength
UVB around 295nm, right up to UVA around 335nm is needed. These lamps do not provide this.
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Looking to the Future
In my opinion this lamp needs improvement before it can replace high quality UVB fluorescent tubes in reptile husbandry. At present, my research suggests that no commercially available LEDs exist with a stable, suitable irradiance to fill in in the “missing” wavelengths in that short-wavelength UVA region between 320nm and about 340nm. However, there is no doubt that in time they will be developed, and a way found to create a much more “sunlike” spectrum. With the inevitable phasing-out of lamps using mercury, and increasing concern with improving electrical efficiency, fluorescent tubes will eventually become obsolete and it seems likely that LEDs will take their place. Should these short-wavelength UVA LEDS be developed, and incorporated in lamps such as this, the future could be bright in more ways than one.