Keldan Lights Video 8M Blue Module Blue light at 450nm 30 watts radiatedReveal and see a fascinating phenomenon of the underwater world with this 95W Keldan BLUE Fluorescence LED Module, which is compatible with their Modular LED video dive lights. The BLUE has a 450nm wavelength designed to excite coral, jellyfish, and other organisms that emit a fluorescent glow in response to stimulation by this deep blue light, which is close to the edge of the visible spectrum. The addition of optional yellow filters on your dive