Green/Gray Worms In Sump

wow, nasty link! I have seen most of those hitch hikers on live rock that was shipped to me. I had a Lumbrinerids that went from the one side of my 55 gallon around the right side and had a webbed mucus looking tube through all my rock work. I finally tore the whole tank down to get him out of the sand and I must have fished 30 of them out of the sand along with a bunch of Eunicids and still get a lingering brisstle worm crawling out from under a rock here and there. Some say they aren't bad, they eat poo but I would perfer no worms in my tank.. lol.
Good link... K +1 Salsa