Product details:

Granular Sodium Bentonite Clay for sealing pond soils. 45 lb pail. One 45 pound bag = 0.63 cubic feet. Covers 9 square feet at 6 pounds per square foot. Bentonite clay is a natural expanding clay sealant that when exposed to moisture can expand 15X or more creating a very effective pond sealant when applied correctly. Our bentonite clay is provided in a granular form directly from the processing facility in Northeastern Wyoming.