175 Watt Metal Halide Ballast Wiring : 250 Watt Metal Halide Ballast and Bulb Kit M58 120V/208V/240V/277V - The first determining factor in selecting the lamp's wattage is dictated by the type of corals being kept, their light requirements and the aquarium's depth.

175 Watt Metal Halide Ballast Wiring : 250 Watt Metal Halide Ballast and B…