Monitor and control algal blooms

MPC-Buoy controls algal blooms in large lakes and reservoirs. It uses LG Sonic’s interactive ultrasound technology with integrated water quality monitoring.

  • Reduce algal blooms, TSS, pH and BOD
  • Lower chemical usage and maintenance time
  • Remotely operated by LG Sonic

How it works


1. Monitor

The MPC-Buoy provides a complete overview of the water quality by collecting the following parameters every 10 minutes: Chlorophyll α (green algae), Phycocyanin (blue-green algae), pH, Turbidity, Dissolved Oxygen, and Temperature.


2. Predict

The collected data is delivered in real-time via 3G/4G to a web-based software. By making use of Artificial Intelligence, MPC-Buoy modifies the ultrasonic program to the specific water conditions and predicts an algal bloom up to 3-10 days ahead. Our customers have access to their water quality data via the MPC-View water quality software.


3. Control

The MPC algorithm activates the optimal ultrasonic treatment frequencies according to the water conditions and type of algae present. The ultrasound creates a sound layer that prevents the algae from accessing sunlight and nutrients. By fixing the algae in the water column, it reduces existing algae and prevents the growth of new algae.

Algae treatment features

  • Overview

  • Treatment

  • Installation & maintenance

  • Environmentally friendly


All-in-one algae solution

MPC-Buoy uses LG Sonic’s patented LG Sonic ultrasound technology. Completely autonomous MPC-Buoy monitors the water quality in real-time and uses this data to predict and control algal blooms.

  • Drinking water reservoirs
  • Cooling reservoirs
  • Lakes
  • Wastewater lagoons
  • Irrigation reservoirs


Ultrasonic algae treatment

Eliminates 70-90% of existing algae and prevents the growth of new algae. MPC-Buoy allows for a reduction of pH, TSS, BOD, and chemical consumption. Each MPC-Buoy device can control algae in areas up to 500m/1600ft in diameter. Multiple buoys can be installed for large water surfaces.

  • 500 meter / 50 acres treatment range
  • Low power ultrasound
  • Improve water quality safely

Installation & maintenance

Installation and maintenance

MPC-Buoy can be quickly deployed. The system is anchored in the reservoir. The water quality sensors and ultrasonic transmitters on MPC-Buoy are equipped with a Aquawiper which automatically cleans the sensors after each reading, keeping the maintenance to a minimum and the readings accurate.

  • Remotely operated by LG Sonic
  • Easily accessible
  • Integrated wiper systems

Environmentally friendly

Safe and proven

The ultrasound used by LG Sonic proven is safe for fish, plants, zooplankton, and insects. Our devices use of low power ultrasound. Unlike when applying chemicals, the cell wall of the algae remains intact. Preventing the release of toxins from the algae into the water.

  • No release of toxins
  • Chemical-free
  • Safe for fish, zooplankton and water plants

System components

System components
  • 1

    Smart communication system

    • GSM/GPRS Telemetry Quadband (CDMA, Radio, GPS and Iridium Satellite optional)
    • Real-time water quality data with the MPC-View software
    • Integrated alarm functions
  • 2

    Solar powered

    • 3x 200 Wp high quality solar panels that provide power, all year-round in any country
    • 1x 24 Volt, 40 AMP lithium battery
    • Switches to energy-saving program during periods of low sun irradiation
  • 3

    Complete sensor package

    • In-situ water quality sensors to provide real-time data
    • Monitors DO, turbidity, pH, chlorophyll α, phycocyanin, redox, and temperature
    • Automatic antifouling wiper ensures optimal readings
  • 4

    Anchored floating buoy construction

    • Aluminium powder coated frame
    • UV and corrosion resistant construction
    • Unsinkable floats
  • 5

    4 ultrasonic transmitters

    • Treatment range of 500m/1600ft in diameter
    • Integrated AquawiperTM, an automatic cleansing system for the ultrasonic transmitters
    • Chameleon technologyTM adjusts the ultrasonic program to the specific water conditions

MPC-View Water quality monitoring software


MPC-View is an advanced web-based water quality monitoring software. The software allows to generate a complete overview of the water quality of one or multiple water bodies.

  • Web-based software
  • User friendly

Visual insights

The software provides insights into the water quality, algae trends, and progress of the ultrasonic treatment in the lake or reservoir.


Users can log in to the software, where they can find a personal dashboard with an overview of the water quality and MPC-Buoy system status.

Real-time alarms

The software allows users to set up specific alarms to inform about changing parameters. Users receive an e-mail notification when the alarm goes off.


Technical specifications


2188mm (l) x 2540mm (w) 860mm (h)

Top view MPC-Buoy


200kg (excl. anchor)

Front view MPC-Buoy


  • Polyethylene buoy
  • Anodized aluminum
  • Closed-cell polyurethane foam
  • Buoyancy capacity 285 kg
  • PV module: 3x 200Wp solar panels
  • 40Ah battery
Data transmission


  • 3G/4G
  • Iridium Satellite (optional)
  • GPS (optional)
  • 1 x RS485 port
  • 1 SDI-12 input
  • 3X RS232
Water quality sensors

Water quality sensor package

  • Chlorophyll a
  • Phycocyanin
  • Turbidity
  • pH
  • Dissolved Oxygen
  • Temperature
  • It is possible to add additional sensors to the water quality sensor package.

MPC-Buoy case studies

American Water case study
American Water
Eliminated chemical usage in the raw water reservoir

Seven years of partnership From 2014, when the initial Dutch-American collaboration began, until the present moment, there have been many achievements along the way. American Water is the largest and most geographically diverse U.S. public water and wastewater utility. Initially, American Water needed to control toxic algae and cyanobacteria present in the Canoe Brook Water Treatment Plant in Short Hills, New Jersey. Additionally, it was necessary to eliminate foul odor…

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NIPSCO case study
NIPSCO reduced TSS levels to comply with NPDES regulations

Complying with NPDES regulations NIPSCO began its cooperation with LG Sonic with the main goal of reducing TSS levels to comply with NPDES Regulatory Discharge Limits. Since the installation of 5 MPC-Buoy systems in the spring of 2019, TSS levels reduced to less than 3ppm. R.M. Schahfer Generating Station in Northwest Indiana (United States) consists of four coal-fired units and two natural gas-fired units. To operate, the power station takes…

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Three Rivers case study
Three Rivers
Lakes remain open during algae season

Control Cyanobacteria concentration Four solar-powered algae control systems were installed in the Aquadrome in Rickmansworth (UK) to control the cyanobacteria concentration in two lakes. Two systems were installed in a lake used for water skiing and fishing, and two additional unites were installed in June 2017 in a lake used for sailing. To ensure that the concentration of cyanobacteria remained at an acceptable level at a popular public open space…

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