Anyone Know What This Is?

Discussion in 'Saltwater Fish and Invertebrates' started by Berridge, Jun 22, 2018.

  1. Berridge

    BerridgeNew MemberMember

    Noticed these white things on in a hole in one of my rocks and have been seeing a couple more in different places the more I look. Anyone have an idea what they are? It’s an 8 gallon nano reef tank with button polyps, green euphyllia, some hermit crabs, snails, an emerald crab, 2 peppermint shrimp. Thanks for the help

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  2. Tony M

    Tony MValued MemberMember

    Not sure which white things you’re looking at, but Nerite Snails, if that what you have, will lay white eggs about the size of sesame seeds all over your tank. They will only hatch in salt water though.
  3. coralbandit

    coralbanditWell Known MemberMember

    Those are pineapple sponges .
    Harmless filter feeder that lives off nutrients in the system.
    A few are fine but too many is a sign of water quality issues IMO.
  4. OP

    BerridgeNew MemberMember

  5. Tony M

    Tony MValued MemberMember

    Oh, I see what you’re looking at now. Thanks Coralbandit!

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