I Love my Sailfin (Sully) and Hippo (Jory) I take corals from my other 5 saltwater tanks and they "clean" them up for me then I can usually return them nice and clean in about 15 min. Better then adding more chemicals plus they get a treat I discovered this by accident when I took all corals out of my nano tank and put them in the 75 gallon so I could clean the nano.