Well, I went to home depot today and purchased two 175 watt Metal Halide lights for $35 each. They fit into a normal sized socket, but simply will not turn on. - what do i need to get this bulbs to work?
did you buy a ballast along or just the bulb? http://forum.grasscity.com/grow-room-design-setup/50131-hid-normal-light-fixture.html