400-Watt-Metal-Halide-Bulbs

Discussion in 'First Time Marijuana Growers' started by dani2, Jul 9, 2006.

  1. It depends on your ballast. Make sure you have the correct ballast for the bulb you pick. Oh, and if I had a choice of HPS or metal-halide. It would be HPS. Good chance you have the best bulb in now. But without details no one can tell.
    Peace, R.
     

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