ph:7.5
Nitrates: good
Hardness: low for a goldfish
Nitrite:0
Ammonia: 0,009
KH/Buffer: low
Water Temperature: 66
Hi, I have my fish sick. Symptoms are lack of appetite, very stopped at the bottom of the aquarium, always opening and closing the mouth, swollen, black coloring on the abdomen, shrunken fins ... I have already treated with esha 2000 and esha hexamite but it didn't work. Do you have any idea what the problem is? THX ( sry for my english)
video: https://streamable.com/schuq4