Thread: Best strains to grow under low wattage hps (250W)
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Old 12-19-2008, 02:45 PM
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Re: Best strains to grow under low wattage hps (250W)
Here is a link to calculate proper lighting. 40 watts per sg ft is optimal, it is said that 60 watts per sq ft should be the max.

http://www.goldenseed.co.uk/growroomlights.html

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