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cyanobacteria
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  1. General Reef Discussion
    Please help! This dark red maroonish stuff started growing on my rocks a few years ago and now it's on almost every rock, covering many of the lower ones completely. It's not slimy or hairlike--more like crusted on. I can get it off with a stainless steel wire brush. What is it? How do I get...
  2. General Reef Discussion
    So I had cyanobacteria on my rocks and dcided to pull it all off myself 2 days ago...now it has come back again. What does everyone reccomend to get rid of it? Antibiotics? Scrub it? Help please and thanks!!
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