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Actinics and algae
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03-14-2012, 03:48 PM
sphelps
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Join Date: May 2006
Location: Lyalta, East of Calgary
Posts: 4,777
Well the purple bulb probably has red in it which tends to spike things up a little but blue also plays a large role in plant growth, plants mostly only use blue and red spectrum so increasing either of these can result in more algae growth.
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