Virtual Sun VS1000WMB 1,000-Watt Magnetic Grow Light Ballast
Price 119.99 - 209.99 USD
Bulb compatibility: 1,000 watts high pressure sodium lamps or metal halide lamps * Input power is stabilized and improves efficiency of equipment * Prevents fluctuations in power from hitting the bulb, causing premature burnout * Working voltage - 120/240 (comes with 120v 3 prong plug) * Interior fan saves energy and lowers operating cost