I wouldnt bother messin with electricity for a couple extra $£ !!
RhinoGrowUK Reviewed by RhinoGrowUK on . Building a HPS is cheaper? I was going to buy a 400 watt HPS light from a hydro online store when I had an idea. I looked into just buying the components of the HPS ballast and then the bulb. I found a site that sells them but I was wondering if this is all I need for a functional 400 watt HPS system? I think I may have to add a cord and socket to the ballast but it's alot cheaper in the long run. Is this all I need? Ballast (needs cord) Rating: 5