Unknown "thing" on live rock.


Reefing newb
i have an unknown thing growing on 1 single piece of rock to me it looks like it might be a type of feather duster since i have tons of dusters in my tank. Any help would be nice. Thanks :)


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i dont think thats feather duster worms either. looks more like some type of anemone type thing. if salt for brains is correct then GET IT OUT of there. you will have to kill that rock to get rid of hydroids.- as in soak the rock in javex for a week