Dam Stop Leak Product Range

Dam Stop Leak® Professional – 100% Pure Dam Sealer – No Fillers, No Flocculants

Dam Stop Leak® Professional offers a swift and efficient solution, plugging leaks without the need to drain valuable water resources.

Price range: $115.80 through $495.80

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Where can Dam Stop Leak® be used?

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

It explains the types of leaks the product treats, where it can be used, and how its advanced granulated polymer formula creates a durable seal. The video also outlines what results to expect, with noticeable improvements often seen within days and slower leaks typically sealing within 21 days.

Dam Stop Leak® Professional – 100% Pure Dam Sealer – No Fillers, No Flocculants - where to use it

How much to use

This video explains how to calculate the correct amount of Dam Stop Leak® Professional 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 60g per square metre, ensuring effective and long-lasting leak sealing.

  • Calculator - how much do I need?
  • Dam Stop Leak® Professional – 100% Pure Dam Sealer – No Fillers, No Flocculants - how much to use

    How to apply the product

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

    Dam Stop Leak® Professional – 100% Pure Dam Sealer – No Fillers, No Flocculants - how to apply the product

    What results to expect

    This video explains what to expect after applying Dam Stop Leak® Professional, 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® Professional – 100% Pure Dam Sealer – No Fillers, No Flocculants - what results to expect
    • Should I turn my pump off during application?

      Yes, it is recommended to turn off pumps and/or filters for at least 24 hours after applying Dam Stop Leak® Professional. As the polymer settles to the bottom of your pond or dam, it will gradually seep into the pond walls. Be sure to check for any residual material before reactivating the pumps.

    • Is it safe to use around fish?

      Absolutely, Dam Stop Leak® is completely safe for fish, being a non-toxic product. However, it’s important to monitor your fish until the product sinks to the bottom because fish, especially koi, might mistake it for food when it’s on the surface.

    • Can I use Dam Stop Leak® in lined ponds/dams?

      Dam Stop Leak® is primarily designed for clay or earth-based dams and waterbodies. While it can occasionally be effective in lined ponds or dams, such instances are rare. In most cases, Dam Stop Leak® might not be the most suitable solution for these situations.

    • Will Dam Stop Leak® work with tree root damage to walls and rabbit holes?

      In clay or earth-based dams, Dam Stop Leak® is highly effective for sealing dam walls with tree root damage and is good for addressing rabbit holes. However, when dealing with large rabbit holes, it might be beneficial to provide additional support, such as placing rubble or rocks in the holes before applying the product. If you are unsure, always consult your local dam contractor.

    • How long will it take to work?

      Typically, you should observe a reduction in water loss within approximately 7 days after applying Dam Stop Leak® Professional. If you don’t notice a change in the amount of water loss, you may need to consider further treatment.

    • How safe is Dam Stop Leak® Professional?

      Dam Stop Leak® Professional is both non-toxic and environmentally friendly, making it a safe choice. Notably, our product contains no potassium, setting it apart as one of the safest solutions 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
    4.3 Based on 28 Reviews
    5 ★
    75% 
    21
    4 ★
    7% 
    2
    3 ★
    4% 
    1
    2 ★
    0% 
    0
    1 ★
    14% 
    4
    Write a Review Ask a Question

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    Filter Reviews:
    DD
    04/11/2026
    Darryl D.
    AU AU

    Dam stop leak

    Great product works well

    CC
    12/11/2025
    Cassy C.
    AU AU

    The Bomb!!

    Did exactly what it said it would do!!

    02/16/2026

    Aquatic Technologies

    Thanks for your lovely feedback, Cassy! We’re so glad you’re pleased with the results.

    DB
    06/03/2025
    Darryl B.
    AU AU

    Dam stop leak

    After about four weeks it would appear to have done the job. Only used a light application Happy with result todate

    AC
    04/25/2025
    Allan C.
    AU AU

    Dam leak

    Good, dam has stopped leaking thanks

    PM
    04/14/2025
    Paul M.
    AU AU

    Happy with Results

    Good delivery speed. After applying once to dam it slowed leaking very markedly on the second application a month later leaking appears to have stopped. Happy so far Thanks

    02/16/2026

    Aquatic Technologies

    Thank you for your wonderful feedback. We’re delighted to hear that you’re pleased with the results.

    CD
    10/25/2024
    Christopher D.
    AU AU

    Stopped the leak without interfering with wildlife

    Our dam had been draining out into an adjacent ravine very rapidly, emptying completely between rains at an an accelerating rate. We have eels that live in the dam and burrow into the mud to wait out the dry periods, so we wanted to seal the dam wall without entombing them underground. We waited until we had a couple of days of rain, applied the product and within a day the dam had stopped leaking completely. Our eels have been accounted for and the blue yabbies seem to have either emerged from the mud or moved in from elsewhere very quickly. Frogs had spawned during the rain before the application and were completely unaffected by the product, the dam is now swarming with tadpoles. Product seemed expensive, but did exactly what we needed it to - sealed our dam without harming the wildlife.

    SH
    09/26/2024
    SIMON H.
    AU AU

    service del good and How long does it take to shaw up the leaking Dam

    unsure yet only added the product last week

    GS
    10/09/2023
    Gary S.
    AU AU

    Dam stop leak

    Product was delivered promptly, and easily applied to dam. Time will tell!

    CB
    07/25/2023
    Chris B.
    AU AU

    excellent product really works

    BR
    05/20/2023
    Burt R.
    AU AU

    Dam stop leak Professional 5kg

    Vert simple to use and seemed to work within hours

    CB
    03/02/2023
    Catherine B.
    AU AU

    Fantastic

    For a number of years we had a slow & steady leak in a dam wall. Finally I found Dam Stop Leak. The leak was gone after the first application. The product was easy to use and arrived soon after order. Highly recommended

    RE
    03/02/2023
    Robin E.
    AU AU

    Dam Stop Leak

    It worked exactly as advertised. My leaking dam now holds to its full capacity. The item was despatched promptly and delivery was faster than I had expected and in good condition.

    PL
    02/17/2023
    Pete L.
    AU AU

    It works

    Quick delivery. Followed instructions and leaking stopped.

    RE
    12/20/2022
    Robin E.
    AU AU

    Dam Stop Leak® Professional - 5kg (treats up to 83m²)

    This product works well. My small dam started leaking very badly. You could almost watch the water running away. The granules were easy to spread and stopped the water loss almost immediately. The order was delivered as quickly as could be expected (within five working days) and there was no problem with the shipping. I happily recommend Stop Leak as a product and Aquatic Technologies as a supplier.

    A Aquatic Technologies Customer
    GL
    12/03/2022
    GREGORY L.
    AU AU

    Amazing products and service

    We bought a dam fixer and not only did it work perfectly, but it arrived quickly and was a great price. Thanks for the excellent experience!

    DM
    12/03/2022
    Daniel M.
    AU AU

    Great purchasing and delivery experience, time will tell if the product works!

    First time, and hopefully last time in the near future, have used the Dam Stop Leak product, being a relatively small dam we managed to spread the granules by hand and worked reasonably well. Time will tell if it managed to stop leakage.

    GB
    11/24/2022
    graham b.
    AU AU

    Pond seal

    My dam was losing on average 150mm per day to a level that it would settle at, now the water has stopped dropping so I’m really impressed with the results from a very easy product to apply. Thanks

    PL
    11/02/2022
    Pete L.
    AU AU

    It works!

    Sealed a dam that's leaked for years. Excellent product. Efficient service.

    NW
    10/26/2022
    Nigel W.
    AU AU

    Leak stopped

    The product was straight forward to use and has stopped the leak. I would highly recommend it. I have a small dam large pond approx 75,000 litres. Watched the leak diminish over 2-3 days and then stop completely.

    CR
    10/19/2022
    Clinton R.
    AU AU

    Good stuff. Works well

    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® Professional – 100% Pure Dam Sealer – No Fillers, No Flocculants - where to use it