Hi everybody, I just started a 29 gallon tank with a deep sand bed. From my reading on the subject it seemed that bristleworms are a good addition to deep sand beds as detrivores and to help stir the sand. Well I was just at my local fish store and the gentlemen there told me that they never have and never will have bristleworms and they are extremely detrimental to an aquarium. Is there any truth in what he says. Can people give me their opinion/experience? Thanks