Galaxy® state-of-the-art HID ballasts are manufactured to provide today’s serious grower with maximum flexibility & performance. The Galaxy® Select-A-Watt® is the preferred electronic ballast on the market, offering the ability to run multiple wattage lamps or dim the highest wattage (defined by model). Galaxy ballasts have an incorporated staggered low current starting feature to avoid inrush problems when running multiple ballasts. They are available in 1500, 1000, 750, 600 and 400 watt. The Galaxy® brand name carries a strong reputation of reliability and performance. Grow Amp also features ultra low RFI broadband emissions.