I just went out to check on my fish for the first time in a while. The
goldfish seem to have white spots all over them, the fantails look like they
have been through a paper shredder! I have one koi with a yellowish bump on
it's side, almost looks crusty, with the scales sticking out. What can I do
for them? Do I have to isolate them, or do I treat the whole pond?
TIA
Carolyn