Also no expert! But, 1 gpm is 1440 gals per day or 525,600 gals per year. Supplement that with rain and snow melt and I think it should be ok. Subtract some evaporation and wicking . My well produces less than that(1/10 gpm) but goes into a 2,500 gal tank that stays full.

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