Granular Bentonite Clay for Pond Sealing
Sodium Bentonite Clay for sealing ponds - 45 lb bag. 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.
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