What is this???

Brittany Boorman

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I came back from a long weekend away to find this covering my coral. What is it??? Will it hurt my Zoas and how do I get rid of it!?!
 

James M

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Cyano, It can smother the zoas to death if not taken care of. You can put the frag in front of a Powerhead to get it off
 

Algae invading algae: Have you had unwanted algae in your good macroalgae?

  • I regularly have unwanted algae in my macroalgae.

    Votes: 43 35.0%
  • I occasionally have unwanted algae in my macroalgae.

    Votes: 27 22.0%
  • I rarely have unwanted algae in my macroalgae.

    Votes: 9 7.3%
  • I never have unwanted algae in my macroalgae.

    Votes: 9 7.3%
  • I don’t have macroalgae.

    Votes: 31 25.2%
  • Other.

    Votes: 4 3.3%
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