Aka

I have 2 35cm oscars recently my son put a creek yabby in their tank which made the ph acidic I removed the yabby got the ph correct again but they are still sulking 2 days later sitting on the bottom then going to the top letting their food go in and out their mouths but not eating it. My oscars have never sulked for more than a few hours what have I done to them 😭😭😭