What is this?

jazzmik

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Pea sized green in color... have a few of these that have popped up.

You can see 2 in the pic below. Looks like the one on bottom left has some sort of tube at the end.

20171116_134243.jpg
 

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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