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Youre right!! Ive been researching those now and all I'vefound on how to get rid of them is to break them off? Is that really the only solution?Feather duster is right. Harmless filter feeder. It does look like a Vermitid snail tube just above the duster
Sorry, i meant the vermited snail tube. There are a bunch in my tank! All over. And i think that's what is killing my zoa'sI would actually keep the feather duster as they help clean your water. I don't see a point to kill a little creature. It is beneficial for you and shows your tank is maturing.

