I am not sure if I added the link correctly or not but I am continuing to have trouble with the fish. These goldfish have been fine for 3 weeks now. Just yesterday I noticed some red in their fins and crystal looking appearance. The local pond place told me to give them a quick salt bath. I did so and put them back. They seemed fine until this afternoon. This one you can see just stays at the top and doesn't do anything else. One of the koi died sometime between 9 and 10 this morning and he seemed to be fine prior to that. I am getting frustrated. All tests are perfect. No other changes. I haven't been feeding because they weren't eating. HELP. any suggestions. I think the others are dying as well. The last remaining koi seems to keep flipping all around the pond and the other two goldfish are acting very strange. I don't want to watch them suffer. I realize they are only fish but I feel like I am killing them slowly since I don't know what is wrong.