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Go Back   The Garden's Cure > The Garden > Planting Indoors > Lighting
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Old 03-22-2005, 11:03 PM   #1
bluegreenozz
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Mercury Vapor Light bulb
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this should grow plants as good as hps or hid right?
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Old 03-22-2005, 11:15 PM   #2
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No, it wont.

If you want to use only one bulb you need an HPS. Metal halide and mercury vapor are the right spectrum of light for vegetative growth but you need HPS (or red spectrum) for flowering.
Metal halide will grow plants well, but are usually only used in vegetative.
Mercury vapour usually isnt used because its spectrum isnt as good as a metal halide, and it generates a huge amount of heat.

I suggest getting an HPS
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Old 03-23-2005, 03:26 AM   #3
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From the Grow Guide:

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MV - Mercury Vapor is the type of lights that were used for streetlights many years ago. Not very good for growing because it doesn't provide enough of the right kind of light spectrum. While they do provide a littleof the blue spectrum, MV also produces too much heat to get very close to a plant, and are very inefficient to operate.
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