If it were me, I would purchase Mike Otto’s book “Just Add Water”. It’s a bargain and Mike is extremely knowledgeable and experienced. Find it at the Pond Boss store.
It's not about the fish. It's about the pond. Take care of the pond and the fish will be fine. PB subscriber since before it was in color.
Without a sense of urgency, Nothing ever gets done.
Boy, if I say "sic em", you'd better look for something to bite. Sam Shelley Rancher and Farmer Muleshoe Texas 1892-1985 RIP