Green spots on rock

IURobert

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Hi all! Few days ago I noticed some green spots on rocks. Could you please help me identify what those are? Hope this is not dinoflagelates. They don’t spread, just appeared in few places.

thank you!

IMG_2121.jpeg
 

High pressure shells: Do you look for signs of stress in the invertebrates in your reef tank?

  • I regularly look for signs of invertebrate stress in my reef tank.

    Votes: 31 32.0%
  • I occasionally look for signs of invertebrate stress in my reef tank.

    Votes: 24 24.7%
  • I rarely look for signs of invertebrate stress in my reef tank.

    Votes: 18 18.6%
  • I never look for signs of invertebrate stress in my reef tank.

    Votes: 24 24.7%
  • Other.

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