Hi all! I have a 27g freshwater aquarium sat in my garage and i am going to set it up as a saltwater aquarium. How do I do this? Also, is my current stocking list way off? It is currently a pair of clowns, a royal gramma/black cap basslet (i can't decide), a firefish, a yasha goby/pistol shrimp pair and a tailspot blenny. Also CUC suggestions would be helpful. Thanks in advace!