Thread: which is better for indoor growing hid or hps?
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Old 02-13-2009, 04:33 AM
Ron Ron is offline
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I think you mean metal halide. Both MH and hps are hid's (high intensity discharge).
HPS last longer and cost less per lumen to operate but cost more than a MH. I know MH is best for veg stage and HPS for flowering but if you can only afford one light I would go with HPS.
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