I think that level of alkilinity should support fertilization. Magnolia gets quite a bit of rain with resulting runoff. Can you control sediment/clay from being washed into the pond?

The cats will probably reproduce but the offspring will most likely be eaten. They are pretty slow swimmers and very succeptible to predation. Generally, CC is a put and take fish.

I can almost guarantee that the bass are reproducing.

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 Grandpa