Well for two weeks my corals have not been happy. Finger leather slumped, spiny shrooms not expanding much, long tenacle plate not blowing up much, zoos not fully opening. etc... Problem is all my tests come back good. ammonia, nitrite, nitrate, temp, calcium, phosphates all good. Before 2 weeks ago all was great. My ph has always been around 7.8 or 8.0 so i decided to add some Marine Buffer to raise it to 8.2 and use pickling lime to keep it there. I used the buffer for 3 days and noticed that the tank was just not happy anymore so i stopped using and did a water change. I was told Marine Buffer was reef safe. Has anyone else had prolems with it? Anyone have some ideas as to what is causing most everything to not be happy. The gsp's seem to be fine. A few days the leather and plate looked almost dead but then revived some.