- Welcome to the Greater Cincinnati Aquarium Society. We are a non-profit organization based in Cincinnati, Ohio that is dedicated to promoting the interests of the aquarium hobby. . Next Meeting: Sunday, Jun 30th - Chuck Rambo will speak about Lake Victoria Cichlids .. New Stuff @ GCAS.ORG:. The 2002 Progressive Tank Tour was a blast. Thanks to the hosts, Pete Shepard, Ken Saxon, Jerry Riegel, ...gcas.org