What in the world is this and can I even get rid of it at this point? This is some sort of flower shaped invasive coral or maybe filter feeder? It was in a small coral frag that I got when I first got into the hobby. I DID dip that frag. It didn’t kill the flower thing. I was new to the hobby and I thought “bonus coral yay”! Fast forward two years and it’s choking out all my corals and covering all the rock work. I don’t know what it is or if I can do anything to remove it. Any suggestions? 

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