The best thing for your SPS is Calcium and Iodide.....yes Iodide not iodine you can kill your corals if you use iodine.....it's for more advanced aquarists who need to keep their levels at an exact point, as for feeding I feed all my corals Coral vite and Chroma plex they are excellent coral foods and mosty a catch all for most of your soft corals. As for Calcium I use B-ionic.....you can start with a bottle of purple up and then switch to the B-ionic it's slightly cheeper and has a alkalinity buffer as well. Good luck!