MH
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| Understanding HID Bulbs | HID Bulb Comparisons |
To learn more about HID lighting read our buyer's guide. HID Lighting Buyer's Guide. Also check out our HPS Bulb Comparison Review to find the best value bulb for your garden. Metal Halide (MH) bulbs should be used for the vegetative phase. MH bulbs give off a blue to white spectrum
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