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Grow Hack: Does Switching from Metal Halides to HPS for Flowering Work?

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AngelOfThyNight:
Grow Hack: Does Switching from Metal Halides to HPS for Flowering Work?

Indoor grow specialists all over the world use blue-heavy metal halide lamps (MH) for vegetative growth and switch to red-heavy high pressure sodium (HPS) lamps for flowering, but is this pricey, laborious process actually beneficial for cannabis?
Source: Grow Hack: Does Switching from Metal Halides to HPS for Flowering Work?

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