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LG Sonic - Ultrasonic Algae Control Technology
Eco-friendly ultrasound technology to control algal blooms in lakes and reservoirs. Ultrasonic algae control stops algae growth without harming other aquatic life. Environmentally safe, Data-driven technology, Long-term algae control.

Without treatment
Algae moves to the water surface for photosynthesis to grow, and to the bottom of the water column for nutrients.
LG Sonic treatment
Ultrasonic wave blocks algae`s access to sunlight & nutrients. Algae sinks to the bottom and dies off without releasing toxins.
- Low-power ultrasound, no cavitation
- No release of algal toxins
- 100% safe for the environment
Our ultrasonic algae control devices emit low-power ultrasound waves in the top water layer, generating a constant pressure cycle around the algal cells. This interferes with the algae’s buoyancy regulation, preventing them from accessing sunlight and nutrients. As a result, they can’t perform photosynthesis and sink to the bottom, where they decompose naturally without releasing harmful toxins. No aquatic organisms, animals, or humans are harmed in the process.
Ultrasound refers to sound waves with frequencies higher than the upper audible limit of human hearing (20 kHz). At specific frequencies, these sound waves can be used to control algae growth. There is a distinction between high-power ultrasound that causes cavitation and the low-power ultrasound used by LG Sonic. Cavitation is caused by the formation of micro-bubbles that collapse, generating intense heat.
Safe for you and the environment
The low-power ultrasound integrated into our devices is safe for fish, plants, people, pets, and zooplankton. Our chemical-free solution doesn’t disturb the natural balance of aquatic ecosystems. It only targets algae, improving water quality sustainably. Multiple studies have proved this.
Effective for large water surfaces
Each device has an ultrasonic treatment range of 800 m / 2600 ft. It is suitable for raw water, industrial and irrigation reservoirs, lakes, dams, ponds and cooling towers, aquaculture ponds, sewage treatment plants, power plants, sedimentation ponds, crystal clear water and sewage lagoons.
Designed for long-term efficiency
Our devices are durable. They survive in extreme conditions, such as extreme heat, cold temperatures, high altitudes, and even desert environments. Unlike other ultrasonic treatments, our method prevents algae from adapting to ultrasound, ensuring long-term algae control.
Our ultrasound treatment starts with real-time water quality monitoring. Data is key when it comes to getting an algal bloom under control.
LG Sonic uses a monitoring system that collects water quality information every 10 minutes. These data points include:
- Chlorophyll-a (green algae)
- Phycocyanin (blue-green algae)
- PH level
- Water temperature
- Turbidity
- Dissolved oxygen
Plus, we can integrate satellite remote sensing to map out remote geographic locations.
Algorithms rely on large volumes of data to work effectively. We’ve built a massive database to fuel the optimization analysis.
Our database contains more than 10 years of information collected from thousands of LG Sonic devices around the world.
This includes data points on different types of water bodies, water conditions, algae species, seasons, etc. Our database is continually refreshed with new data.
As highly adaptive organisms, algae can become resistant to treatment methods, including ultrasound.
To avoid this, we’ll determine the most effective ultrasonic program for your unique situation, whether you need to control blue-green algae (cyanobacteria), phytoplankton, or diatoms.
The program parameters will be specific to wave form, frequency, pause, and amplitude. The key to long-term results is to adjust settings before the algae mutate. Ultrasonic programs that adapt to ever-changing water conditions.
Integrated Aqua wiper
Biofouling is the accumulation of microorganisms on submerged surfaces. It can also form on our ultrasonic transmitters. To ensure optimal ultrasound efficiency, our devices have an automatic cleaning system integrated. It’s called the Aqua wiper™.
The Aqua wiper™ is the first and only automatic ultrasound transmitter cleanser. This unique feature takes away the chore of manually cleaning the transmitters on a weekly or bi-weekly basis. Plus, it significantly reduces maintenance time, costs and labour.
