400w Hamilton 14000K metal hailde bulb. Bright Ice White Blue color, great for reeftanks, and gives water a shimmery clear blue effect, no need for additional actinic fluorescent. The 400 watt 14K metal halide is bright ice white blue appearance, full spectrum - Outstanding color! Greater light output and brighter with better color stability consisting primarily of high spikes in 440-460nm (nanometer) range and additional smaller spikes in 550, 590 and 690nm. Will bring out an attractive fluoresence from your fish and corals.