--- product_id: 34649915 title: "Granular Sodium Bentonite Clay for Pond Sealing 45 lbs" brand: "natural waterscapes" price: "Β₯98564" currency: JPY in_stock: true category: "Natural Waterscapes" url: https://www.desertcart.jp/products/34649915-granular-sodium-bentonite-clay-for-pond-sealing-45-lbs store_origin: JP region: Japan --- # Natural, eco-friendly soil amendment Expands 15X on water contact 45 lbs heavy-duty coverage Granular Sodium Bentonite Clay for Pond Sealing 45 lbs **Brand:** natural waterscapes **Price:** Β₯98564 **Availability:** βœ… In Stock ## Summary > πŸ’§ Seal your pond like a pro β€” don’t let leaks steal your zen! ## Quick Answers - **What is this?** Granular Sodium Bentonite Clay for Pond Sealing 45 lbs by natural waterscapes - **How much does it cost?** Β₯98564 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/34649915-granular-sodium-bentonite-clay-for-pond-sealing-45-lbs) ## Best For - natural waterscapes enthusiasts ## Why This Product - Trusted natural waterscapes brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Heavy-Duty 45 lbs Bag:** Ample quantity for medium to large ponds, ensuring full coverage - β€’ **Eco-Conscious & Natural:** 100% natural sodium bentonite clay, safe for your ecosystem - β€’ **Versatile Soil Integration:** Easily mixed or layered for optimal sealing and soil stability - β€’ **Precision Application Rates:** Customizable dosing from 2 to 5+ lbs per sq ft for any soil type - β€’ **Ultimate Pond Sealant Power:** Expands up to 15 times its size to create an impermeable water barrier ## Overview Natural Waterscapes Granular Sodium Bentonite Clay is a premium 45 lbs bag of natural expanding clay that swells up to 15 times its volume when wet, providing an effective, eco-friendly seal for ponds and water features. Designed for customizable application rates based on soil type, it ensures a durable, water-tight barrier while enhancing soil integrity. ## Description 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. 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. The application rate for bentonite ranges from 2 pounds to more than 5 pounds per square foot depending on the soil characteristics. For clayey and silty soils, 2 pounds per square foot MAY be sufficient. For sandy soils 4 pounds MAY be sufficient and for soil containing gravel and rock, in excess of 5 pounds will be required to obtain a seal. Once the bentonite is applied, the soil should be disk harrowed to mix the soil and bentonite and then compacted. Alternatively, a continuous blanket of bentonite can be applied to the soil and then carefully covered with clean soil or sand to prevent the clay from mobilizing into the water column. ## Features - Expanding Clay for Pond Sealing - Granular Sodium Bentonite Clay - Soil Amendment - Expands in contact with water ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01HSFQR1K | | Best Sellers Rank | #281,568 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #171 in Water Garden & Pond Liners & Seals | | Brand Name | Natural Waterscapes | | Customer Reviews | 4.0 4.0 out of 5 stars (208) | | Global Trade Identification Number | 00860625000300 | | Item Dimensions | 25 x 15 x 15 inches | | Item Form | Granules | | Item Weight | 45 pounds | | Manufacturer | Natural Waterscapes | | Material Type | Natural Bentonite Clay | | Model | 200045 | | Part Number | 200045 | ## Product Details - **Brand:** Natural Waterscapes - **Item Form:** Granules - **Item Weight:** 45 pounds - **Item dimensions L x W x H:** 25 x 15 x 15 inches - **Material:** Natural Bentonite Clay ## Images ![Granular Sodium Bentonite Clay for Pond Sealing 45 lbs - Image 1](https://m.media-amazon.com/images/I/515z2abCEgL.jpg) ## Questions & Answers **Q: Do you have the complete characterizations and indices of this bentonite? Is it Wyoming source or where?** A: Our product is Granular Sodium Bentonite from Wyoming.Granular Bentonite particle size = -8 MeshAll bentonite particles will pass through a 0.093" opening. As with any "minus mesh" screened product, all particles are smaller than the mesh opening. Bentonite Swell Index = 30 Bentonite Percent Moisture = 16.6%Aged Fann 600 = 34.0 (measure of viscosity)pH = 7.75 **Q: Is this the same clay that can be used as a detox internally and use topically?** A: Sodium bentonite clay can also be used for these purposes. Natural Waterscapes sells the sodium bentonite for the purpose of sealing pond leaks. This product is not food grade and should not be ingested. Natural Waterscapes 877-493-7660 **Q: would this work to make a stock pond?** A: Bentonite is used to seal soil for leaking/ or new ponds. Depending on soil type we recommend anywhere from 2-8lbs of bentonite per square foot of pond area. (2-3lbs for good/poor clay, 4-8lbs for sandy soil types). Natural Waterscapes **Q: I want to make a duck pond. I have a low area on my property that holds water when it rains. Could i rotatill this in with dirt and will it stay there** A: Tilling the bentonite with soil and then compacting it with a pad foot roller is the recommended method for pond bottom sealing. Depending on the soil type, it will require 2 to 6 pounds per square foot of pond bottom. You may want to look for it in 2,000 lb bulk sacks unless it will be a relatively small pond. ## Frequently Bought Together - Natural Waterscapes Granular Sodium Bentonite Clay for Pond Sealing 45 lbs - 50 Pound Benseal Bentonite Drilling Mud Water Well Pond Foundation Seal Waterproof Baroid Grouting Wyoming Sodium Bentonite - Granular Sodium Bentonite Clay for Pond Sealing - Natural Soil Clay Pond Liner 25 Pounds - Blend of Chips and Powder - Use for Pond Leak Repair & Dam Sealer --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/34649915-granular-sodium-bentonite-clay-for-pond-sealing-45-lbs](https://www.desertcart.jp/products/34649915-granular-sodium-bentonite-clay-for-pond-sealing-45-lbs) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-31*