Okay, I'm new here and I know NOTHING about sw tanks. Are you guys saying you could have things in your tank you didn't put in there purposely? I think this is the second thread I saw that people have found 'surprises' in their sw tanks. Some not so nice surprises. That is scary to me.
happens all the time as we use live rock which can come in with all sorts of living bits and pieces on it(commonly known as hitch hikers) things like corals, crabs, pods, shrimp, snails. I have seem a couple of people even end up with fish!