What is this on my zoa?

Crass

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Need help with I'd on this little guy.

20200503_220305.jpg
 
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Crass

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Colonial Hydroids.
Yep definitely looks like that! It recedes when it catches particles really fast like a filter feeds would.

Are the concerning? Is it worth pestering my zoas to try and get rid of it? Or just let it be
 

KJ

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Yep definitely looks like that! It recedes when it catches particles really fast like a filter feeds would.

Are the concerning? Is it worth pestering my zoas to try and get rid of it? Or just let it be
Use super glue.
 

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