I don’t know. However, if it’s flowing, it seems to me that the pressure comes from above the water line. The problem with springs is that they can both give and take water depending on the pressure from above the water line.

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