:shout: I recently inherited my daughter's 60 gal. fish tank when she moved out for college. (I have a koi/goldfish pond) She has semi-agressive fish in it: 2 catfish, 2 bala sharks, 3 tetras, 2 rosy reds, 2 rubber-lipped pochastamus, 2 clown loaches & a couple striped bottom feeders, (forgot...