The Planted Tank Forum - View Single Post - 20T t5 HO lighting
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Old 01-12-2013, 03:39 AM   #8
Wannaberooted
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I can't answer that one, maybe somebody else can. I got some algae when I was running 12 hours a day, so I've been slowly cutting back. I doesn't seem to be getting worse at 10.5 hours now anyway.
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