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Bentonite Clay / 50 lb Bag

Bentonite Clay / 50 lb Bag

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A natural swelling clay used to help create watertight soil barriers under bottomless stock tanks, ponds and other water-retention projects.

When hydrated and properly compacted, bentonite expands into soil voids, reducing seepage through porous ground.

50 lb bag | High-swelling clay | Soil sealing & water retention


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A Natural Way to Reduce Water Loss

Bentonite clay is widely used where soil needs help holding water. When it becomes wet, the clay swells and fills voids, making it useful for bottomless stock-tank bases, farm ponds, reservoirs, lagoons and other earthen water-containment projects.

Common Uses

  • Bottomless stock tank sealing
  • Farm and decorative pond sealing
  • Reservoirs and water-retention areas
  • Soil sealing and waterproofing projects
  • Water wells
  • Foundation sealing

Application Depends on the Site

Bentonite performance depends on soil type, compaction, moisture and application rate. A sandy or gravelly site can require a different approach than clay-rich soil. For a bottomless tank, determine the sealing method and prepare a stable, level base before assembling the tank wall.

Sold in a 50 lb bag. For large projects, calculate required coverage based on actual site conditions rather than assuming a single universal application rate.