The Planted Tank Forum - View Single Post - Question about algae on plants
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Old 01-30-2013, 07:15 AM   #4
OldJedi
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How old is the bulb? I believe that an old (over a year) bulb can put out light in the wrong spectrum and encourage more algae than plant growth. That and the color temp of the bulb--which should be around 5000 - 6700K.
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