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Innovative Marine Aquariums

Black stuff


SquishyFishy

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t65bvr.jpgWell, I've been battling cyano for weeks now and then I notice these new spots of black algae starting to appear on the back wall. Just round spots of black stuff. Harder to scrape off than red slime. What is this?

 

Getting pics now will put up in a minute

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Yeah more than likely its black coralline algae which is a good type of algae that many people strive to grow in their tanks. It usually grows with some color (blue, red, white, purple, green, black) but it won't take over your corals like other algae.

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