Not to burst your bubble but I have kept fish both salt and fresh for 30+ years and I got heavily into reef tank keeping about a year ago. I started useing tropic marin salt a very good salt. The price is going up due to import costs from germany. Then I tried salinaty, a new brand only found in very premium fish stores also excellent. Then I went to instant ocean for the price but let me tell you sometimes you get what you pay for. Things started dying and conditions suffered and at first I couldn't figure it out. I change my water every day. I went and talked to a friend who owns a premium fish store and he told me instant ocean is inferier salt so I went back to salinity. Over night everything came right back the way it had been and even the stuff like mushroom coral that was doing ok under instant ocean became much better. Instant ocean dosen't have the same amount of additives like calcium and other things corals need to thrive. As far as I'm concerned they should be ashamed of themselves calling that reef salt. Like I said sometimes you get what you pay for and I just don't see the point in having a reef tank if you cant keep certain things due to inferier salt. Believe me its worth the money for the better salt I was so angry when my tank was not doing well and I couldn't figure it out but I am super happy again now. I even have things books say are impossible to keep and they are all fine so the proof is in the pudding.