Hello all,
My family has an indoor pond in our atrium that we have had a couple years with about 7 fish including catfish, koi, goldfish and Chinese hi fin sharks. No plants. We have it filtered with activated charcoal and a waterfall to keep it oxygenated. Here recently we had one of our catfish die so we changed the water 10 days ago. Now the other catfish which normally is yellowish in color is more white with scratches on its side, white sores growing and peeling of the skin. We changed the water again yesterday but the fish don’t want to eat and hanging around the catfish. We checked the pH, alkalinity, hardness, etc and it is all pretty normal. pH is 7.2 alkalinity was kind of high but I think that is due to the fact that we have hard water. Attached are some pictures. Can anyone please help? Don’t want to loose another fish
My family has an indoor pond in our atrium that we have had a couple years with about 7 fish including catfish, koi, goldfish and Chinese hi fin sharks. No plants. We have it filtered with activated charcoal and a waterfall to keep it oxygenated. Here recently we had one of our catfish die so we changed the water 10 days ago. Now the other catfish which normally is yellowish in color is more white with scratches on its side, white sores growing and peeling of the skin. We changed the water again yesterday but the fish don’t want to eat and hanging around the catfish. We checked the pH, alkalinity, hardness, etc and it is all pretty normal. pH is 7.2 alkalinity was kind of high but I think that is due to the fact that we have hard water. Attached are some pictures. Can anyone please help? Don’t want to loose another fish