Sorry what I meant by everything else is the ammonia, nitrite and nitrate levels. I am currently waiting on a API GH and KH Test Kit being delivered as I couldnt get one from any the pet shops round about me. Unfortunately I lost another cory today.
Temperature is at 24 degrees.
Im just not sure ...

I am relatively new to fish keeping and have came across my first disease with my peppered corydora. I have been researching online and asked around a few pet shops what could be possibly wrong. My PH level is 6.4 everything else is at 0. I had first thought and was advised that it was swim bladder ...