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Pond Care AlgaeFix™ is a liquid algae-control product for use in ornamental fish ponds and water gardens containing live plants and fish. Pond Care AlgaeFix™ controls many types of algae including “green water” blooms and filamentous algae.

  • Can be used in ponds containing live plants and fish.
  • Effectively controls “green water” algae blooms and blanket weed (Oedogonium).
  • Keeps ornamental ponds and water gardens clean and clear.
  • An EPA registered Algaecide that helps resolve future algae problems.

Can Pond Care Algae Fix be used in a water garden containing live plants?

Yes. Pond Care AlgaeFix can be used in ponds containing submerged plants like cabomba, and floating plants such as water lettuce, and flowering plants, such as iris and water lilies. Pond Care AlgaeFix has been tested in extensive laboratory and field trials with aquatic plants. The following is a partial list of plants that we have tested and found to be compatible with Pond Care AlgaeFix when used as directed.

Common Name Scientific Name
Water Lily Nymphaea sp.
Canna Canna sp.
Water Lettuce Pista stratiotes
Water Hyacith Eichhornia crassipes
Taro Colocasia sp.
Lotus Nelumbo sp.
Cattail Typha sp.
Cardinal Flower Lobelia cardinalis
Fairy Moss Azolla caroliniana
Iris Acorus calamus
Parrott’s Feather Myriophyllum aquatica
Pickerel Weed Pontederia sp.
Thalia Thalia sp.
Cambodia Cabomba caroliniana
Anacharis Egeria densa
Water Pennywort Hydrocotyle verticilliata

Can Pond Care Algae Fix be used in a fountain?

Yes. Pond Care AlgaeFix can be used in ornamental fountains. Pond Care AlgaeFix is non-staining and non-corrosive.

What types of algal problems will Pond Care Algae Fix control?

Pond Care AlgaeFix is effective against “green water” (e.g., Chlorella) algal blooms. Dense populations of suspended algae cause green water algae blooms. The water may be so green that fish cannot be seen. Pond Care AlgaeFix also controls filamentous algae commonly known as “string” or “hair algae” (e.g., Cladophora) and “blanket weed” (e.g., Oedogonium). Algae growth in ponds can appear as green water blooms, filamentous algae on plants, and floating algal mats. Algae may also grow on rocks, fountains, and waterfalls.

How does Pond Care Algae Fix work?

Pond Care AlgaeFix controls algae in two ways. Many algae, like Chlorella, consist of a single cell. Pond Care AlgaeFix causes the algae cell wall to leak. The algae respond much like a deflating balloon. Other algae, such as Oedogonium, form filaments made up of many cells. Pond Care AlgaeFix binds to protein in the cell membrane, disrupting the flow of nutrients and ions across the cell membrane. Filamentous algae respond to Pond Care AlgaeFix by gradually disintegrating over time. AlgaeFix can be used with aquatic plants.

Are goldfish and koi sensitive to Pond Care Algae Fix?

Extensive laboratory and long-term outdoor field studies has shown that Pond Care AlgaeFix can be used in ponds containing Koi and Goldfish without worry. The outdoor field-testing ponds also contained a variety of other organisms including leopard frogs, tadpoles, snails and other aquatic life.

Are there any precautions necessary when using Pond Care Algae Fix?

Before using Pond Care AlgaeFix, make certain that the pond has vigorous aeration, i.e., a fountain, waterfall, or aeration device. Anytime dead algae are removed by the filter or settle to the bottom of the pond, the oxygen level may drop to harmful levels if adequate aeration is not provided. If adequate aeration is not provided, fish loss due to low oxygen levels may also occur. Therefore, when using Pond Care AlgaeFix in warm summer months, adequate aeration must be provided. Do not shut pond pumps and aeration devices off at night. Be sure to keep the pond filter clean and running properly when using AlgaeFix.

Do not use Pond Care AlgaeFix with crustaceans, including crabs, shrimp, freshwater shrimp, and freshwater lobsters.

How do I treat with Pond Care Algae Fix?

It is a violation of federal law to use this product in a manner inconsistent with its labeling.

Add 1 teaspoonful (5 ml) of Pond Care AlgaeFix for every 50 US gallons (190 L) of pond/fountain water. Thoroughly mix Pond Care AlgaeFix into the pond/fountain water by adding it near the pump outflow, waterfall, or aeration device. Pond Care AlgaeFix can be mixed in a bucket of pond/fountain water and dispersed evenly around the pond/fountain. Repeat dose every 3 days until algae is controlled. Be prepared to siphon out dead filamentous algae. Once algal growth is under control, add one dose per week. Weekly doses of Pond Care AlgaeFix will control algal growth and reduce pond/fountain maintenance.

  • 64 oz. (treats 19000 gallons)
  • 1 ga.  (Treat 38,400 gallons)

Additional information


64oz., 1 Gallon


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