Sponge ?

anthias1082

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Hi, after changing my decor in one of the stones I noticed a species, is it a sponge? or something else because it is very hard.

IMG_8549.png
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%

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