Are these sponges in my sump?

sirburke

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I think they are but I am second guessing myself.

small, white, anchored.

1C54B1B7-9AEE-49E3-9A83-794B90D928CA.jpeg
 

lapin

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looks like them
 

vetteguy53081

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This wont be around long and favor shaded areas. Totally harmless
 

Just grow it: Have you ever added CO2 to your reef tank?

  • I currently use a CO2 with my reef tank.

    Votes: 7 6.7%
  • I don’t currently use CO2 with my reef tank, but I have in the past.

    Votes: 4 3.8%
  • I have never used CO2 with my reef tank, but I plan to in the future.

    Votes: 5 4.8%
  • I have never used CO2 with my reef tank and have no plans to in the future.

    Votes: 84 80.0%
  • Other.

    Votes: 5 4.8%
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