Bentonite is not a cure-all and its cost is determined by the nearness of your source. The same goes for trucking in native clay. You may want to read the Pond Boss threads on Soilfloc. (It may be your most affordable option.) Pond liners are expensive but may be the best solution. Is there a local experienced pond builder who could give you his input?
Are you digging your pond yourself? What equipment is being used? Are you using some method of soil compaction? How about some photos to help us see your project?
Last edited by dg84s; 02/17/17 07:25 PM.
