Algae Control

Measures to limit the growth of cyanobacteria and green algae in water reservoirs

Ways to Combat Cyanobacteria and Green Algae

Ponds and lakes with high nutrient levels can experience excessive growth of cyanobacteria and green algae during the growing season, negatively affecting water quality and use. Fortunately, there are methods to address this situation.

Learn about the best ways to combat the unwanted growth of cyanobacteria and green algae in water reservoirs. Keep in mind that there is no „one-size-fits-all“ solution. Each water site requires a specific approach, sometimes using a combination of methods. Our experts can assist you in analysing the situation, designing appropriate measures, and consulting with relevant authorities to obtain their approval and cooperation before implementing the measures.

Enhancing Natural Processes

Bacterial Products

Bacterial products can be an effective and affordable way to support natural processes that help reduce phosphorus in the water column and sediment deposition.

Our Algaway Bio W, Ecoboost, and MuckawayTM products contain only non-GMO bacteria that are commonly found in nature. This makes them safe for the environment, fish, birds, animals, and people. Water treated with our products can be used for fishing or recreation immediately after application. However, please keep in mind that application of these products should be discussed with relevant authorities prior to use.

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A Natural and Aesthetic Way

Floating Vegetation Islands

Floating reed islands are a natural and aesthetically pleasing way to enhance water quality. These islands serve as floating root cleaners by extracting nutrients from the water and converting them into biomass throughout the growing season. Once or twice a year, the vegetation on the islands is mowed and composted out of the water, further contributing to the nutrient reduction process.

In addition to their cleaning capabilities, floating vegetation islands also help to extend the shoreline, which is crucial for maintaining the self-cleaning capacity of the reservoir. These islands create a valuable habitat for zooplankton and small fish, while also shading the water surface and providing an interesting aesthetic feature. They come pre-grown and are ready for immediate deployment.

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Rapid Nutrient Reduction

Phosphorus Precipitation

Phosphorus precipitation is a fast (results are visible within hours) and efficient technique to really jump-start nutrient reduction and improve water clarity. This method is particularly well-suited for managing the quality of recreational and decorative water bodies. The process involves adding a coagulant to the water, which quickly removes phosphorus compounds from the water column and locks them to the bottom. Please note, that the application must be discussed with the relevant authorities. 

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The Chemical-Free Method

Ultrasonic Elimination of Cyanobacteria

Low-power resonant ultrasonic technology utilizes short ultrasonic pulses at specific frequencies to damage the walls of cyanobacteria gas bladders and green algae cell vacuoles, effectively preventing the cyanobacteria from reproducing and leading to the death of the algae. This chemical-free technology is safe for fish other aquatic organisms and bathers / people. One ultrasonic transmitter can cover an area of approximately 300 metres in diameter for elimination of green algae and diatoms, and up to 800 metres in diameter for cyanobacteria.

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Maintaining a Healthy Reservoir Environment


Aeration involves blowing air into the water reservoir using diffusers installed at the bottom. This technique promotes water circulation, helps maintain healthy dissolved oxygen levels, and reduces the formation of oxygen-free zones at the bottom of the water body. Avoiding anaerobic conditions is crucial for supporting natural decomposition processes, reducing phosphorus loading, and improving the living conditions of aquatic organisms. Aeration has a significant impact on water quality, sediment volume reduction and biomass mineralization. It also enhances the effectiveness of applied bacterial products.

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Maintaining a Healthy Water Reservoir Environment

Sediment Removal

Sediment deposition is a natural process in both natural and artificial reservoirs. As sediment accumulates, it reduces the usable volume of the reservoir, leading to faster heating and water quality issues. Mud removal is often part of aStáhnout průvodce complete reservoir revitalization, which involves treating the embankment, repairing structural components, and strengthening the banks.

Of all the measures described here revitalization of a reservoir is the most radical and costly one, but proper reservoir management can extend the time between necessary revitalizations.odbahneni-eliminace-sinic.jpg (529 KB)

Smart Prevention

Water Treatment at the Influent

Treating water before it enters the water reservoir is often the preferred approach. An automatic precipitation station can be used for long-term continuous phosphorus precipitation at the influent. Another option is constructing a smaller upstream reservoir, where water quality can be more easily influenced, or water can be simply de-silted at shorter intervals. It's important to note that these measures have a gradual and time-delayed effect on the main reservoir's water quality.

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