The ReefLux is the first true 10000 Kelvin full spectrum metal halide bulb to be offered to the aquarium market. ReefLux offers you the highest PAR rating that reduces the need for supplemental lighting. ReefLux was designed for when coral growth is of top priority. This particular warmer spectrum lamp has a pleasing element of blue color to help balance the lamps warmer nature giving it a bright white appearance. You will enjoy the intense light quality of the 10000K ReefLux Super Daylight for growing a wide range of corals, especially harder to keep shallow water species.