Sorry they require different ballasts. You can buy switchable ballasts though. GrowIT!So i want to use a 600w system for my lights.
For can i just pick up an ordinary 600w light fixture and swap the 600w MH with the 600w HPS?
OK i know what a ballast is but, is it safe to put a MH bulb in lamp even though the ballst came with a HPS lamp?