EnviroSonic’s ultrasound technology is delivered by a transducer producing sound waves and a cavitation effect to control non-motile algae, including blue-green algae (cyanobacteria), throughout the entire water column—not just on the surface. Algae can thrive at depths of over seven metres, so coverage throughout the whole area is critical.

Our systems emit ultrasound waves between 15 and 50 kHz, radiating in a semicircle from each submerged transducer. These waves travel at approximately 1,400 metres per second through the water, delivering targeted energy to disrupt algae cells.

What sets EnviroSonic apart from other systems is the strength of our units, which delivers acoustic cavitation.

This powerful mechanism occurs when microscopic bubbles form and collapse due to pressure changes created by our ultrasound waves. The resulting cavitation generates short-lived oxidising compounds, such as hydrogen peroxide (H₂O₂) and hydroxyl radicals. This cellular disruption increases the overall effectiveness of our algae control — giving EnviroSonic a measurable advantage over less powerful systems.

The cavitation process bursts the gas vesicles of cyanobacteria, which help them float and access light for photosynthesis. With their buoyancy compromised, the algae sink and lose access to sunlight— halting their activity and reproduction.

Importantly, EnviroSonic does not cause full cell lysis (the complete breakdown of algal cells), which is a common side effect of some chemical treatments. Cell lysis can release taste and odour compounds or toxins into the water. By avoiding this, EnviroSonic offers a more controlled and lower impact for an environmentally sound solution.

Many of our installations have reported up to a 98.9% reduction in blue-green algae counts—both initially (often within weeks, depending on the algae species) and sustained over time.

EnviroSonic is safe for people, plants, animals, fish, insects and zooplankton.