We take pride that Harsonic® is the undisputed leader in a mechanical (ultrasonic) system to remove biofilm and prevent all kind of fouling.

Good customer service is the lifeblood of our company. We never make promises we can’t keep.

The company Harsonic® is located in the city Sint-Niklaas (Belgium) and has more than 25 years experience in water treatment, always in an ecological friendly manner.

Together with our team of engineers we realized to manufacture perfect and powerful ultrasound devices. Harsonic® doesn’t only use very powerful ultrasound on the right frequencies, but also has a unique HS technology integrated.

What is Ultrasound ? How does it work ?

All sound is caused by vibrations; they set up waves which travel through a medium. That medium can be air, but sound actually travels better through fluids and solids. The human ear can detect sound at frequencies of between 20 and 20,000 Hertz, this being the number of vibrations per second. Sound at a frequency above 20 KHz is inaudible to humans and is known as ‘ultrasound’.

The transducer is the main part of the ultrasound machine. The transducer makes the sound waves and receives the echoes. It is, so to speak, the mouth and ears of the ultrasound machine. The transducer generates and receives sound waves using a principle called the piezoelectric (pressure electricity) effect. In the transducer, there are one or more quartz crystals called piezoelectric crystals. When an electric current is applied to these crystals, they change shape rapidly. The rapid shape changes, or vibrations, of the crystals produce sound waves that travel outward. Conversely, when sound or pressure waves hit the crystals, they emit electrical currents. Therefore, the same crystals can be used to send and receive sound waves.

The frequency of emitted sound waves determines how deep the sound waves penetrate.

Every organism has a certain frequency of its own. Waterborne micro-organisms and bacteria attach and multiply creating bio-film layer ‘slime’. Algae cells also attach in the same way.  The bio-film provides a suitable surface to attach on.

Thanks to Harsonic®, there will no longer be a bio-film. As a result growth is prevented as the cell structures of the algae and micro-organisms are targeted and cannot survive.

Ultrasound is completely harmless. Because it does not use radiation, the side effects of radiation are not an issue. Ultrasound is used every day for monitoring pregnant women and their unborn children.

To prove Harsonic® has no influence on other electronic equipment and is completely safe, we have an official EMC certificat.


Harsonic® devices are so powerful that they can even remove an existing biofilm. This means that micro-organisms which are already attached to the biofilm , will come off (not in seawater).


Five stages of biofilm development: (1) Initial attachment, (2) Irreversible attachment, (3) Maturation I, (4) Maturation II, (5) Dispersion


5 Year Warranty

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