Aquatic Dam Stop Leak

Dam Stop Leak® Standard – Dam Sealer

Dam Stop Leak® Standard plugs leaks in dams and ponds without needing to drain the water. Best suited for smaller dams.

Price range: $99.80 through $430.00

Tax included. Shipping calculated at checkout.
  • Product Description

    Dam Stop Leak Standard is a sealer specialised to stop water leakage in clay and earth based dams or ponds. Able to be applied directly to the water Dam Stop Leak Standard works quickly, is cost-effective and provides long lasting results.

  • How To Use

    Spread the required amount over the water’s surface with an appropriate applicator or by hand. Optimal results are achieved when the water temperature is above 5°C and under light wind conditions.

    Click here for more detail on using Dam Stop Leak® Standard – Dam Sealer.

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Where can Dam Stop Leak® be used?

Dam Stop Leak® Standard is a non-toxic, environmentally friendly treatment designed to permanently seal leaks in clay and earth-based dams and ponds that have previously held water.

This video explains the types of leaks the product treats, where it can be used, how it works by sealing cracks and gaps beneath the water surface, and what results to expect. Safe for fish and livestock, Dam Stop Leak® Standard can begin producing noticeable results within days, with slower leaks typically sealing within 21 days.

Dam Stop Leak® Standard – Dam Sealer - where to use it

How much to use

This video explains how to calculate the correct amount of Dam Stop Leak® Standard needed to treat a leaking dam or pond. It covers how to measure the surface area, when to treat the entire dam or a targeted leak area, and how to determine the required dosage using the recommended application rate of 80g per square metre, ensuring effective leak sealing.

  • Calculator - how much do I need?
  • Dam Stop Leak® Standard – Dam Sealer - how much to use

    How to apply the product

    This video explains how to correctly apply Dam Stop Leak® Standard for the best sealing results. It covers the ideal application conditions, preparation steps, how to treat known and unknown leak locations, and what to expect after application, with leaks typically sealing within 21 days.

    Dam Stop Leak® Standard – Dam Sealer - how to apply the product

    What results to expect

    This video explains what to expect after applying Dam Stop Leak® Standard, including how soon results may be visible and the factors that influence its effectiveness. It outlines the typical sealing timeline, when a second application may be needed, and how to identify cases where a dam may require structural repairs or a liner instead of further treatment.
    Dam Stop Leak® Standard – Dam Sealer - what results to expect
    • Should I Turn Off My Pump During Application?

      It’s recommended to turn off pumps or filters for at least 24 hours after application. Once the polymer settles at the bottom of your pond or dam, it will begin to seep into the pond walls. Make sure to check for any remaining material before reactivating the pumps.

    • Is Dam Stop Leak® Safe Around Fish?

      Yes, Dam Stop Leak® is entirely safe for fish. It’s a non-toxic product. Keep a watchful eye on your fish until the product sinks to the bottom, as fish, especially koi, might mistake it for food when it’s on the water’s surface.

    • Can I Use Dam Stop Leak in Lined Ponds/Dams?

      While Dam Stop Leak® is designed for use in clay or earth-based dams and water bodies, it can sometimes be effective in lined ponds or dams, but these cases are infrequent. In most situations, Dam Stop Leak® may not be the ideal solution for lined ponds or dams.

    • Will Dam Stop Leak™ Address Tree Root Damage to Walls and Rabbit Holes?

      In clay or earth-based dams, Dam Stop Leak® is excellent for plugging dam walls with tree root damage and is effective with rabbit holes, though extra support may be needed for large rabbit holes, such as placing rubble or rocks before applying the product. For such cases, consider using Dam Stop Leak® Professional.

    • How Long Does It Take to Work?

      On average, you should observe a reduction in water loss within seven days of application. If you don’t notice a significant change in water loss, additional treatment may be necessary.

    • How Safe Is Dam Stop Leak®?

      Dam Stop Leak® is both non-toxic and environmentally friendly. Unlike other brands, our product contains no potassium, making it the safest solution available on the market.

    Complete specifications:

    What our customers are saying

    Don't just take it from us. Read what our customers have to say.
    Customer Reviews
    2.7 Based on 3 Reviews
    5 ★
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    Filter Reviews:
    SR
    07/13/2023
    Stephen R.
    AU AU

    Dam stop

    The powder has gone all gooy and sitting on top of the water. Is this normal?

    AH
    06/29/2025
    Adam H.
    AU AU

    could be me could be the dam could be the product

    unfortunately, after two goes this did not stop the leak. Delivery was quick

    KC
    03/17/2024
    Kathleen C.
    AU AU

    Did not do the job

    got advise from service team this would work after showing the dam leak and other areas around the leak, (which took heaps of my time). Use the produce exactly how advised and it had no impact on the issue. Purchase 3 large buckets cost me $1K and over. Requested refund or advise received nothing. NOT Happy

    Tanks & Troughs

    (TANK VOLUME/1,000) x 2 = Coptrol (mL) for mild algal blooms
    (TANK VOLUME/1,000) x 5 = Coptrol (mL) for severe algal blooms
    Coptrol Size (L) Volume Treated (L) Surface Area Treated (m²)
    1L 100,000L - 200,000L 120m2 - 240m2
    2L 200,000L - 400,000L 240m2 - 480m2
    5L 500,000L - 1,000,000L (1ML) 600m2 - 1,200m2
    15L 1,500,000L (1.5ML) - 3,000,000L (3ML) 1,800m2 - 3,600m2
    20L 2,000,000L (2ML) - 4,000,000L (4ML) 2,400m2 - 4,800m2
    200L 20,000,000L (20ML) - 40,000,000L (40ML) 24,000m2 - 48,000m2
    1000L 100,000,000L (100ML) - 200,000,000L (200ML) 120,000m2 - 240,000m2
    Coptrol treatment will vary depending on the severity of your algae bloom. For severe algae blooms use the lower volume or surface area to calculate how much Coptrol needed.

    Coptrol™

    For the safe control of all types of algae in all types of water bodies.
    coptrol-15l-and-1l-png

    How it works

    Algae actively seek out and absorb Coptrol for its nutritional value. Once absorbed through their cell wall digestive enzymes within the algae cell breaks down the copper chelate and releases the active constituent inside the algae cell to kill it. Coptrol is solely used for the control of algae and does not control aquatic plants.

    Method of application

    Once diluted, Coptrol can be applied directly from a bucket, watering can, knapsack sprayer, horticulture sprayer, firefighter pump sprayed from the bank, or from boats or aircrafts.

    Alternatively Coptrol can be dripped directly into flowing water in high volume treatments such as flood irrigation water.
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    Dam Stop Leak® Standard – Dam Sealer - where to use it