HELP! Can any member tell me what these little grey "onion" shapes are that is growing under this Hammer

Discussion in 'General Reef Aquarium Discussion' started by Clive Hill, Jul 11, 2019.

  1. Clive Hill

    Clive Hill New Member

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    Are these Sponges under a Blotched Hammer Coral.JPG I have noticed these onion shaped balls growing under this Blotched Hammer, also have a few popping up on rocks and other coral. can any member tell me what they are? I was told they are micro sponges and will not harm the tank, but I want to be sure.
     
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  2. DaveK

    DaveK Well-Known Member

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    They are small sponges, sometimes called pineapple sponges. They are harmless and usually considered a good sign that your doing something right.
     
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  3. Clive Hill

    Clive Hill New Member

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    Many thanks DaveK
     
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  4. nanoreefing4fun

    nanoreefing4fun Well-Known Member
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    +1 Scypha Sponge (pineapple sponge) :rbwwelc:to RS ! Start a tank thread and share more pics with us so we can follow along !
     
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