P pgrayf81 Member Jan 27, 2010 #1 So I have a 400 watt Metal Halide ballast... Would this 400 watt HPS conversion bulb work in my ballast? http://www.1000bulbs.com/Metal-Halide-400-Watt-Conversion/34609/
So I have a 400 watt Metal Halide ballast... Would this 400 watt HPS conversion bulb work in my ballast? http://www.1000bulbs.com/Metal-Halide-400-Watt-Conversion/34609/