Rock has something on it. Is this algae?

msayeka

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So I got a anemone that came with a rock it was attached on. The anemone moved from the rock and when I took at closer look at the rock it looks very strange. Is this some type of algae? It looks like it had tentacles growing from it and some other weird patterns. Please see pictures below and help me identify. Thanks!

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Lavey29

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It's just normal rock algae that is in every tank as the rocks mature. It's not an issue and signs that the tank is moving along in the right direction.
 

WheatToast

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I am seeing tube/fan/feather duster worms (white tubes), which are harmless filter-feeders, and vermetid worm snails (translucent, brown tubes with twisted bases), which are pests that can be eliminated by gluing their openings shut or removing the base of the tube.
 

paragrouper

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I am seeing tube/fan/feather duster worms (white tubes), which are harmless filter-feeders, and vermetid worm snails (translucent, brown tubes with twisted bases), which are pests that can be eliminated by gluing their openings shut or removing the base of the tube.
Same here. I would recommend removing the vermetid snails as well. They can spread rather quickly and pester corals.
 

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

  • I regularly have unwanted algae in my macroalgae.

    Votes: 40 34.2%
  • I occasionally have unwanted algae in my macroalgae.

    Votes: 25 21.4%
  • I rarely have unwanted algae in my macroalgae.

    Votes: 9 7.7%
  • I never have unwanted algae in my macroalgae.

    Votes: 8 6.8%
  • I don’t have macroalgae.

    Votes: 31 26.5%
  • Other.

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