Ushio 20,000 Kelvin Temperature, high color rendering, mogul base metal halide lamps for Aquarium lighting systems and commercial lighting applications. The Aqualite™ lamps have a high color temperature from a single point source which simulates the appearance of sun light in ocean depths of approximately 5 meters. The superior spectrum balance of the Aqualite™ lamps make for ideal lighting conditions for reef systems including fish, coral, other marine fauna and flaura, and plant growth. Please note ballast requirement for each wattage.