I'm thinking mostly some kind of shrimp but, what is a good invert to have in my nano tank that will clean it good and eat hydroids? I know a peppermint shrimp will and is a great housekeeper but I had to get rid of mine because it picked on the Feather Duster. It has to be something that will not harm fish, hermit crabs, a snail, corals, or the Feather Duster.

