That's not a combo but a switchable ballast. You either run MH or HPS, not both. I have one and it's great. Haven't heard much about the Sunleaves brand, but the price seems about right for a grow store. I don't like the built in ballasts as they add too much heat to the grow area. It's much better for keeping the grow room cool if you can have the ballast outside, but if you can manage an additional 3-10 degrees in your grow room it doesn't matter.
Opie Yutts Reviewed by Opie Yutts on . LED growing- An instructional grow log trying this again. growing jack herer x bubbleberry in pure LED. these plants wont see any white light from seed to bud. tried posting pics once...so here we go again. questions or comments gladly answered. Dont think its been done quite like this before. ;) wish me luck! whiskeytango SnSstealth Rating: 5