sandsifter

Hi everyone, I have a 55 gallon saltwater. Its 2 months old and I eventually want to get corals (probably by the end of the year). I currently have 2 clowns, 2 banggaii cardinals, 1 blood shrimp, and hermit crabs and snails. I want to add these: 1 royal gramma 1 purple firefish 1 lawnmower...