Worms ar good scavengers leave it there. I am yet to see one munching on corals.

My bristle worm is nowhere NEAR as big as that one and I have 28 gallons of saltwater for him to play in. I am going to leave him in the aquarium. As long as he will not hurt anyone I shall leave well enough alone!

I put mine in the refugium, he could scavange all he wants there

I only saw that giant bristle worm once and have never seen him come out of the rocks again. No deaths of livestock or anything. Perhaps he is a vegetarian!

Good idea to put him into a sump or refugium - but I only have a 28 gallon tank and no sump or refugium to speak of.