Metal Halide Aquarium Lighting

Metal Halide (MH) lights are most commonly seen illuminating football fields, but are also used in our hobby by reefkeepers and die-hard plant enthusiasts, who demand very high light intensity. The fixtures cost significantly more than fluorescent over $200 per fixture). The bulbs last longer and provide more efficient and brighter illumination than fluorescents: typically 175-250 watts per bulb, but generate an appropriately higher level of heat as well. Some aquarists like the sun-like shadow effects generated by MH bulbs