Saltwater aquariums are divided into several categories based on the fish inhabitants: fish only (FO), fish only with live rock (FOWLR) and a reef aquarium. The careful selection of each saltwater fish, invertebrate, and coral determines the aquarium type and is essential to the success of the saltwater aquarist.
I went in to look. Even though I owned a freshwater tank, the staff took the time to explain the fun and benefits of Saltwater tanks. Very impressed, definitely will be back.— Mike Scherback