do i need more then one ballast for my 4 250watt lights? - Marine ...
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Aquarium Light Directory
Metal Halide Ballast
Metal Halide ballast kits for replacing old ballast or building your own light system
100 Metal Halide HID Ballasts
Metal Halide HID Ballasts: Advance, Sola Ballasts. We have 35w thru 1500w. Browse Huge Inventory. Order Today at Lowest Prices on the net. 1000Bulbs.com
Metal Halide Ballasts
durable and attractive, the IceCap electronic metal halide ballast series is the benchmark for quality and value. Will drive any 250W Single Ended ...