The Planted Tank Forum - View Single Post - Comparison of Lighting Types (Lumens and Watts)
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post #6 of (permalink) Old 12-16-2005, 12:22 PM
Algae Grower
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Join Date: Dec 2003
Location: Linkoping, Sweden
Posts: 125
Lumens doesn't tell much how good a bulb is growing plants because lumens is weighted towards human response (our eyes are sensitive to yellow-green, the same light plants *reflect*):
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