Quote Originally Posted by allan View Post
...Now to the important question. Do you think that particular worm is a hazard to the tank? We took it out, but since it didn't seem to be parasitic was this a knee jerk reaction?
The first two sentences from the link that Regric25 posted above,

Most common, polyclads are active carnivorous predators and scavengers and can be found feeding on various sessile invertebrates. Some species are herbivores and have specialized on green algae or benthic diatoms. ...
So Allan, which species do/did you have? lol!

Christopher

(Quote taken from: http://www.rzuser.uni-heidelberg.de/...duction04.html )