ATI 48" 6x54W SunPower T5 High-Output Fixture complete with individual parabolic-style reflectors for each bulb made from silver-coated 98% reflective German-made aluminum, active cooling system w/ 2 fans, built-in electronic ballasts, acrylic shield, two 10 ft power-cords and a sleek, adjustable "Grip-Lock" style hanging kit. (Bulbs sold separately.) Common Sizing Guideline: soft coral tanks up to 160 gallons, mixed reef tanks up to 130 gallons and SPS dominated tanks up to 110 gallons. Recommended Tank Depth: up to 30" with carefully planned placement of corals. Power Consumption: approximately 324 Watts. Warranty: 1-Year Manufacturer's Limited Warranty.