DS - I think what Opie is suggesting is that you have a MH bulb for vegging and an HPS for flower. If you get a digital or switchable ballast, you can use either bulb with the same ballast.

I use 1,000 watts per 4'x4' area and it works great! :thumbsup:

PC :smokin:
PharmaCan Reviewed by PharmaCan on . Simplistic, yet great hydro system. Can you please suggest one? I want to try hydro, even aeroponics, but I'd rather get a feel for hydro before dabbling into that sort of thing. What is a simple hydro system that will teach you what you need to know? 1000watt light, 4x4 grow space. SOG most likely. Rating: 5