I know hps is better for flowering but the hps light I inherited has a bad ballast and for half the money of a new ballast I can get a 400W metal halide. How much of a difference does this make in the bud? I will have 4 plants in a 3x2 area roughly 6000 lumens per sq ft. 1500 less than my hps. Thanks in advance!

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Me? No, I dont smoke... But I love the way it smells

You're still going to get strong growth and good buds with MH. Is HPS better for bud growth...yes. Will it make a huge difference in yield? Probably not. I've just found that the buds are tighter and bigger with HPS because the spectrum HPS displays is better for bud formation.

I suggest trying the MH lamps this grow, and if you're unhappy with the yield, pick up a HPS for next time. Just my 2 cents. Good luck with ur grow.