So I got home last night and my clowns were both laying on there sides and breathing very hard. I tried to call my buddy who mixes my water for me but he was already in bed.(Always have water ready on hand in case of 911, lesson learned). So I did the only thing I could I had a bag of Coralife salt under my stand and I wnt to walmart and got some RO water and mixed 14g 1 gallon at a time and checked the Sal. with a friggin hydrometer. Long story short I changed out 14g our of my 20g and when I woke up this morning all my fish were.......................................Still alive THANK GOD!! Im not sure what caused it my levels were ok and all my corals looked great. The only thing I can think of is maybe I had cologne on or my girl sprayed here air fresherner to close to the tank. I just hope whatever happend never happens again and they my fish make it through it. They seemed ok today and they were swimming around so........It was very tramatic!!