We had good clay by that and the experts' analysis, but I think the guys who put down the clay liner were not experienced with what they were doing (I wasn't either!). I believe esshup suggested an 18 inch thick liner; ours was only 12 inches. I am not sure how to do that accurately, even on a small pond like yours and mine. Anyone have a way to know?
Bumping this back up because I noticed Michael's question wasn't answered and I now have the same question. After talking with some fellow Pondmeisters via PM, I've decided to use a sheepsfoot soon to compact clay throughout my pond as well as seal the upper bowl. What techniques are there to make sure you're obtaining that 18 inches?
