250W 20000K METAL HALIDE DOUBLE ENDED BULB-AQUALINE

This German-made Aqualine double-ended 20000K metal halide bulb offers excellent coloration and good intensity. It is crisp-white with a blue tint. It brings out the fluorescent pigments in corals nicely. Fluorescent supplementation is usually not necessary, but can be used for added intensity and to simulate dawn and dusk. An electronic ballast, magnetic pulse-start ballast or magnetic HQI ballast is required to ignite this bulb. It must also be housed inside a pendant. It cannot be used with simply a reflector in an open application as UV rays emitted by the bulb must first be filtered with a UV-proof lens. The bulb will burn more white on an HQI ballast and more blue on electronic or pulse-start ballasts. An excellent choice for reef tanks up to 24" deep.