Ohio Reef
Reef Discussion => Pests, Nudsiance Algae and Prevention => Topic started by: ThaDon on June 04, 2013, 17:31:25
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I have black algae on the top of the sand what is it from. I sterd it up but just came back stronger.
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Could be cyno? Red to brownish? Your best bet is to use the algae guide on the front page.
http://www.ohioreef.com/index.php?topic=14117.0 (http://www.ohioreef.com/index.php?topic=14117.0)
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Make sure it isn't hydrogen sulfide, too. Likely only the case if your sand bed got disturbed, but can cause SERIOUS problems if it is.