Scott, it all depends on the mix of sand/clay. Wicking never really stops no matter what the soil is.

I looked at a N. Texas pond a couple of years ago that was a mix of clay and gravel. It seems to work if compacted. I wouldn't have believed it but all of the ponds in that area had gravel.

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