If I may make a suggestion. NExt time try a HYper salinity dip. I often use water change water for this, put 2-3 gal. of water in a 5 gal. bucket. Add an air stone and approxamately 1/2 cup salt, Instant ocean/Kent, water ever salt you use to make SW. Submerge rock in bucket and leve it for half an hour or so. Due to the higher salt levels the bristle worms will crawl out trying to get away from it, and you won’t risk losing any beneficail bacteria. this can also be done when adding any new LR to a new tank or an established system.