Sodium Bentonite Clay for Pond Sealing 3000 lb Super Sack
Sodium Bentonite Source. Our bentonite clay is provided in granular form directly from the processing facility in Northeastern Wyoming. Bentonite Clay Application Rates for pond/lake bottoms. To properly apply bentonite to seal a pond, the pond must be drained and the bentonite clay then incorporated into the soil of the pond bottom and sides.