The Planted Tank Forum - View Single Post - One Way to Design a Planted Tank LED Light
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post #20 of (permalink) Old 03-04-2013, 05:18 AM Thread Starter
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How far apart, center to center, are the bulbs? I don't think my empirical equation will be very accurate for this type of setup, but it may be close enough to know if you have very high light or low light.

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