Hi everyone. I'm new to the forum but I could really use some help. Many of my fish were found dead this morning. A big clown, a dragon net, and a six line wrasse. One shrimp did die yesterday but I checked all my parameters and nothing seems to be off except the ph level. So I don't think the shrimp death is what caused the fish to die. My current parameters are: Nitrates 0 Ammonia 0 Ph 7.7 The tank has been stable for a long time. None of these fish were new I have had all of them for many months, some even years. I have no idea why they suddenly died but if anyone has any ideas I would love to hear them.