Help ID pest.

[Bruce Spiegelman]

Any ideas? It takes up all the places between the heads and create space, but doesn't cover the heads.

 

[Coral reefer]

Looks like a sponge to me

 

[Vhuang168]

Can you siphon any of it off? My zoas sometimes slime up and it collects debris.


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[Bruce Spiegelman]

No it doesn't siphon off. It is "spongy" but it's weird how it's kind of smooth and solid and doesn't cover the heads.

 

[Bmart]

Looks like a q-tip or pineapple sponge. I get them occasionally when I have a slight rise in phosphates. Haven't seen them actually grow around a polyp though.

 

[Bruce Spiegelman]

And these are growing around a dozen or so polyps. In between and around -- but not over.

 

[Julius Chen]

I may gave this same thing in my tank. New setup, 2 months old, changing water every 2 weeks.

 

[Coral reefer]

Not harmful. Filter feeding on dissolved organics. Often show up in newer tanks