is this a bad sign

  1. GothFishKeeper

    What is this polyp looking thing?

    A couple weeks ago I added a half pound piece of live rock to my nano as an island for the mushroom I’m planning on adding. Today I noticed this really small thing that looks kind of like a polyp on the rock near a hole. Any idea what it could be? There’s also a similar looking one towards the...
  2. J

    Can someone help me

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