Reefing newb
I have this thing growing in my tank. Its the claw like thing above the candy cane coral. Can anyone tell me what it is and if its bad or good?


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I think I have to agree that it's an anemone. The tentacles look more round like an anemone and not flatter like the feathers on a duster.
I've read in some places they are just a type of aiptasia or others that they are curlicues. Either way, they seem to grow similarly and sting just as bad - I just used aip-x to eradicate them.
Its a goner. I Xed it and it had the wierdest implosion ive seen. It looked like it tried to spit it out by thrusting forward several times then bam it sucked in its hole never to be seen again.