The Planted Tank Forum - View Single Post - Question about algae on plants
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post #4 of (permalink) Old 01-30-2013, 06:15 AM
Algae Grower
Join Date: Dec 2009
Location: Tucson, AZ
Posts: 11
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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