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Internet # 307440112

Model # 42398

Store SKU # 1003905330

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  • Restores the health of your pond by preventing green water
  • EPA registered product
  • A 64 oz. bottle treats up to 18,920 gallons of water
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Product Details

About This Product

Stop algae growth in its tracks. TotalPond Algaecide restores the health of your pond or water feature by preventing green water, eliminating existing algae, and resolving additional algae blooms. It effectively controls many types of green or green water algae, string or hair algae, and blanketweed in ponds that contain live plants. One 64 oz. bottle treats up to 18,920 Gal. of water. TotalPond Algaecide is EPA-registered and safe for fish and plants.

Highlights

  • Stop algae growth in its tracks! TotalPond Algaecide restores the health of your pond or water feature by preventing green water, eliminating existing algae, and resolving additional algae blooms.
  • How it works: Effectively controls many types of green or green water algae, string or hair algae, and blanketweed in ponds that contain live plants. Can be used in ponds with fish and plants.
  • When to use: Ideal for when green water or algae appear.
  • Dosage: One 64 oz. bottle treats up to 18,920 gallons of water. Add 1 tsp (5ml) for every 50 gallons of pond/fountain water. Weekly doses will control growth and reduce pond or fountain maintenance.
  • EPA-registered: TotalPond Algaecide EPA registration number is 88999-2-84732.
  • Active ingredient: Poly[oxyethylene (dimethyliminio) ethylene (dimethyliminio) ethylene dichloride]
  • Dosage TIP: When using this product in warm weather, be sure to dose the water carefully. Several doses should be spaced 5 to 7 days apart until desired results are achieved.
  • Aeration TIP: Especially in warm weather, before using water treatments make sure the pond has strong, constant aeration - ex. fountain, waterfall, or other aeration devices - to avoid low oxygen levels.
  • Return Policy

Product Information

Internet # 307440112

Model # 42398

Store SKU # 1003905330

Additional Resources

Shop All TOTALPOND
From the Manufacturer

Specifications

Dimensions: H 9.8 in, W 4.8 in, D 4.8 in

Dimensions

Container Size (oz.)

64

Product Depth (in.)

4.8 in

Product Height (in.)

9.8 in

Product Width (in.)

4.8 in

Details

Chemical Form

Liquid

Returnable

90-Day

Treatment Capacity (gallons)

18920

Warranty / Certifications

Manufacturer Warranty

Not applicable

Questions & Answers

I could not see the instructions. What pH should the water be before adding this?
ByMar 21, 2026
1 Answer | 
Answer This Question

Hello Katzen, thank you for your inquiry. Unfortunately, we do not have that information. That is a question for your local pond store. Your TotalPond Water Gardening Specialist, Cindy

By|Mar 23, 2026


    We have water lilies. And, wildlife such as deer, birds (crows, woodpeckers, wrens), squirrels, and bunnies, drink the water. Salamanders and dragonfly larvae live in the water, too. Will this be safe for these animals and will the water lilies be okay??
    ByMar 21, 2026
    1 Answer | 
    Answer This Question

    Hello Katzen, thank you for your inquiry. Our Algaecide is safe for plants, fish and wildlife when used as directed. We hope this helps! Your TotalPond Water Gardening Specialist, Cindy

    By|Jun 30, 2026

      (1)

      We have Algae floating on the top of the pond. Will this product kill that type of algae?
      BySep 3, 2024
      1 Answer | 
      Answer This Question

      Hello, thank you for your inquiry. TotalPond Algaecide restores the health of your pond or water feature by preventing green water, eliminating existing algae, and resolving additional algae blooms. When using this product in warm weather, be sure to dose the water carefully. Several doses should be spaced 5 to 7 days apart until desired results are achieved. Especially in warm weather, before using water treatments make sure the pond has strong, constant aeration — ex. fountain, waterfall, or other aeration devices — to avoid low oxygen levels. We hope this helps! Your TotalPond Water Gardening Specialist, Erica

      By|Sep 3, 2024


        I know it varies from pond to pond, but how long is it effective, before having to treat again?
        ByJul 5, 2023
        1 Answer | 
        Answer This Question

        Hello Dugg. After your first dose if you are still having algae, you can repeat the dose every three days until the algae is controlled. We hope this helps. Your TotalPond Water Gardening Specialist, Natalie.

        By|Jul 12, 2023


          Does this help kill duck weed?
          ByJun 20, 2023
          2 Answers | 
          Answer This Question

          Hello. No, this treatment effectively controls many types of green or green water algae, string or hair algae and blanketweed. We hope this helps! Your TotalPond Water Gardening Specialist, Natalie.

          By|Jul 11, 2023

            I don’t know what duck weed is. This is meant to kill algae. It is safe for our Koi in our pond. We have other plants like lilies and water hyacinth that live well while using this product.

            By|Jun 20, 2023


              Can humans swim in a pond treated with this product?
              ByApr 13, 2023
              2 Answers | 
              Answer This Question

              Yes

              By|Apr 20, 2026

                Hi Mary, Thank you for your question. This treatment is for ornamental pond/fountain use only. It is not for recreational use, we hope this helps! - TotalPond Team

                By|Apr 20, 2026

                  (1)

                  Is algicide plus clarifier OK for a pond with fish in it
                  ByOct 10, 2022
                  1 Answer | 
                  Answer This Question

                  This product is EPA-registered as safe for fish and plants. Follow the directions for safe use. MIke

                  By|Mar 13, 2023


                  Is this product safe for all fish? Bass, bluegill, channel catfish and crappie
                  BySep 17, 2022
                  3 Answers | 
                  Answer This Question

                  Not sure but it won’t hurt them so it said

                  By|Sep 3, 2025

                    (1)

                    i'm not a fish biologist, i can not answer that question without doubts. i can tell you i have kio and goldfish in my pond forever and have never had any adverse reaction from my fish. simple instructions tell you how to distribute the solution.

                    By|Sep 19, 2022

                      We have a 20, 000 gallon pool we turned into a pond. We have large koi. We can dump in a whole gallon of the treatment, assuming the algae is not too thick, and the fish are fine. I assume other fish would do similarly.

                      By|Sep 19, 2022


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                        Customer Reviews

                        4 out of 5

                        • 4 out of 89 reviews
                        • 60% recommend this product
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                        Showing 1-10 of 89 reviews
                        It’s the best product that I have found
                        by
                        This customer chose to rate the product and not provide text.
                        by
                        • Verified Purchase
                        It's helping to keep our fountain clean and clear of algae.
                        by
                        • Verified Purchase
                        This worked real good
                        by
                        This customer chose to rate the product and not provide text.
                        by
                        • Verified Purchase
                        This customer chose to rate the product and not provide text.
                        by
                        • Verified Purchase
                        It works but slow on clearing algae
                        by
                        • Verified Purchase
                        Not Sure if it Works
                        Use the prescribed amount in our fountain every 3 days during warm weather and it still gets green within a month, so not sure if the algaecide is doing anything.
                        by
                        Response from TotalPond TeamJul 8, 2026
                        Hello, thank you for your review, all feedback is important to us. Our algaecide effectively controls many types of green or green water algae, string or hair algae, and blanketweed in ponds that contain live plants, when used as directed. We also recommend having your water tested before using any water treatments to make sure you are treating the issue correctly. Your TotalPond Water Gardening Specialist, Erica total-pond
                          No change almost like it enhanced the growth rate of algae
                          by
                          Response from TotalPond TeamJul 1, 2026
                          Hello James, thank you for your review, all feedback is important to us. Our algaecide restores the health of your pond or water feature by preventing green water, eliminating existing algae, and resolving additional algae blooms. It effectively controls many types of green or green water algae, string or hair algae, and blanketweed in ponds that contain live plants when used as directed. It sometimes takes more than one dose to get the algae under control. You can repeat the dose every three days until algae is controlled the use once a week for maintenance. You need to use as directed. We hope this helps! Your TotalPond Water Gardening Specialist, Cindy total-pond
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                          Showing 1-10 of 89 reviews