We are just regetting back into saltwater, but corals are new to us. Started with a fluval 13.5 gal, but soon realized I wanted bigger one. We got a 180 gal back in May. We are loving it. 7 clowns, blue tang, starry bleeny, falco hawk, yellow Angel, klein butterfly, diamond goby, royal gramma, and a green mandarin. We have several frags 1 bta and one long tentacle. We watch the tank instead of tv now. Have learned lots from this site.