are they good or bad for your tank? and how? I was talking with a marine biologist who said it was good to get rid of all of the bristle worms. Are they beneficiary or harmful? I had always though bebficiary but i dont know know.
Years back, they were all thought to be harmful to aquariums ...Over the years it has proved otherwise. While there are some varieties that can be harmful, for the most part they've proven to be beneficial members of the clean up crew.
