Coralvue metal halide bulbs feature the highest color quality for aquarium lighting. The Coralvue bulbs have a great combination in color balance and color temperature. The appearance of sun light is replicated perfectly by the Coralvue bulbs, which make for ideal lighting for your corals and fish. The Coralvue bulbs are available in many sizes and color temperatures. The mogul base bulbs are available in 175W, 250W, and 400W. We offer 2 different color temperatures in our mogul base bulbs: 10000K, and 20000K.