I deal with them not through manual removal but through aggressive skimming and filtration. They have been present in my reef almost since day one without causing any problems. I actually kind of like them as they add to the biodiversity of the system. I know there is more than one species out there, mine are about 1/16" in diameter and grow no longer than 1/2". SPS coral encrust over them and the LPS outgrow then smother them. I have also seen a type that grows quite large +1/8" diameter and ~2" long, are those the type you are dealing with?
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