Hello, Woke up this morning and my clown was swimming around like normal. Put a quarter of a cube food into the tank and my clown didn't touch it. I then phoned my partner at lunch time and asked her to do the same but it still wouldn't eat anything. I came home tonight to find that the little fella had died. I did a water test: PH: 8.2 Nitrite: 0.02ppm Nitrate: 10mg/ppm Alk: 8 Ammonia: 0.01mg/ppm Salinity : 1.023 Temp: 77 Could stress kill my clown , it wouldn't find a place to sleep at night and was constantly swimming. My cleaner shrimp and snails are all fine. Thoughts?