---
product_id: 34649915
title: "Natural Waterscapes Granular Sodium Bentonite Clay for Pond Sealing 45 lbs"
price: "€ 685.79"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.hr/products/34649915-natural-waterscapes-granular-sodium-bentonite-clay-for-pond-sealing-45
store_origin: HR
region: Croatia
---

# Effective soil amendment & pond sealant Expands 15X+ on contact with water 45 lbs granular sodium bentonite clay Natural Waterscapes Granular Sodium Bentonite Clay for Pond Sealing 45 lbs

**Price:** € 685.79
**Availability:** ✅ In Stock

## Summary

> 💧 Seal your pond, secure your peace of mind — naturally unstoppable!

## Quick Answers

- **What is this?** Natural Waterscapes Granular Sodium Bentonite Clay for Pond Sealing 45 lbs
- **How much does it cost?** € 685.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/34649915-natural-waterscapes-granular-sodium-bentonite-clay-for-pond-sealing-45)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Easy Integration:** Mixes seamlessly into pond soil for a natural, durable seal
- • **15X Expansion Power:** Seals leaks by swelling massively on moisture contact
- • **Bulk 45 lbs Packaging:** Enough volume for medium to large pond projects without constant reordering
- • **Trusted Pond Leak Fix:** Proven by users to stop leaks and maintain water levels reliably
- • **Versatile Soil Compatibility:** Works on clay, sandy, silty, and rocky soils with tailored application rates

## Overview

Natural Waterscapes Granular Sodium Bentonite Clay is a 45 lbs bag of premium expanding clay that swells over 15 times its volume when wet, creating an effective, natural seal for ponds and water features. Designed for easy soil integration, it adapts to various soil types with specific application rates, ensuring a reliable, long-lasting pond seal that prevents leaks and water loss.

## 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.

Review: Natural Waterscapes Sodium Bentonite Clay - A thin coat worked well on a clay soil under drainage tile. The delivery was prompt and the product was easy to spread.
Review: Worked like a charm - So, the Natural Waterscapes Granular Sodium Bentonite Clay for Pond Sealing has fixed my leaking pond! The leak was around the concrete drain. The leak was so bad there was a large cavity about four feet deep and 30 feet long running along the outside of the drainpipe. I dug out the area around the drain about a two foot cube, that was the beginning of the big cavity. I mixed the bentonite clay in with the dirt I had dug up and tamped in around the concrete drain. I then filled in the rest of the cavity with dirt from the farm. The pond filled up after several rains and has been at its normal level for two weeks. There is no discernible drop in the water level. For reference my pond is roughly 150 feet in diameter and 10 feet deep at the deepest point. I would recommend making sure you order enough as the one bucket barely did my project. I would say I removed 5-6 large wheelbarrows full of dirt from the leaking area and then mixed the clay in. If I had to remove anymore dirt I don't think one bucket of bentonite clay would have been enough.

## Features

- Expanding Clay for Pond Sealing
- Granular Sodium Bentonite Clay
- Soil Amendment
- Expands in contact with water

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #130,258 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #71 in Water Garden & Pond Liners & Seals |
| Customer Reviews | 3.8 out of 5 stars 204 Reviews |

## Images

![Natural Waterscapes 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Natural Waterscapes Sodium Bentonite Clay
*by B***L on November 7, 2025*

A thin coat worked well on a clay soil under drainage tile. The delivery was prompt and the product was easy to spread.

### ⭐⭐⭐⭐⭐ Worked like a charm
*by L***E on May 29, 2020*

So, the Natural Waterscapes Granular Sodium Bentonite Clay for Pond Sealing has fixed my leaking pond! The leak was around the concrete drain. The leak was so bad there was a large cavity about four feet deep and 30 feet long running along the outside of the drainpipe. I dug out the area around the drain about a two foot cube, that was the beginning of the big cavity. I mixed the bentonite clay in with the dirt I had dug up and tamped in around the concrete drain. I then filled in the rest of the cavity with dirt from the farm. The pond filled up after several rains and has been at its normal level for two weeks. There is no discernible drop in the water level. For reference my pond is roughly 150 feet in diameter and 10 feet deep at the deepest point. I would recommend making sure you order enough as the one bucket barely did my project. I would say I removed 5-6 large wheelbarrows full of dirt from the leaking area and then mixed the clay in. If I had to remove anymore dirt I don't think one bucket of bentonite clay would have been enough.

### ⭐ make the water so cloudy
*by F***N on December 11, 2024*

it stop the leak for one week and leak afterwards and make the water so cloudy even have filter system will not buy anymore

## Frequently Bought Together

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-02*