Recreational marine

Three different solutions to avoid biofilm growth on recreational boats

against growth on the Hull

against growth on Propellers or Outdrive

against fouling in Fuel- or Watertanks

Save yourself time and money

  • Highly effective against fouling (algae, grasses, barnacles,mussels)
  • Avoids biofilm in fuel- & watertanks (also dieselbacteria)
  • Saves fuel
  • Increases speed
  • Saves annual expenses of antifouling
  • No more labourous maintenance
  • Environmentally safe & friendly
  • The lowest power consumption (6W) with the biggest range (40m2 / transducer !)
  • No good, money back!


A clean hull is extremely important! Everybody who has a boat knows the problem: fouling or the growth of all kinds of organisms. Fouling is an annoying problem which reduces speed, increases fuel consumption and causes corrosion damage.

The current solutions are often not effective and require costly annual maintenance. Moreover, they harm the environment and your own health since they contain toxic elements.

Harsonic® avoids the initial step of the fouling, called biofilm. Eliminating the biofilm prevents the development and the attachment of barnacles, mussels, oysters and algae.

Harsonic® keeps the hull of your boat clean without taking the boat out of the water every year for cleaning and repainting.

Fouling can negatively affect your boat’s fuel efficiency, speed and cause increased maintenance costs to remove the fouling. It causes a powerboat to use up to 30% fuel and slows down sailboats because of the increased drag.

It can also affect the maneuverability of the boat. And if you leave fouling attached to your boat for too long you can damage the paint and cause deterioration of your boat overall. Hull fouling is highest for boats that remain stationary in the water for long periods of time.

A propeller in poor state is a disaster

A propeller and his shaft is exposed to all sorts of attacks underwater, such as rusting and adhesions of the sea. It is the key piece of the ship’s propulsion system, and thus deserves special attention.

To continue to use a very dirty propeller is like driving your car on a road that’s in very poor state and full of potholes. We know that very dirty pieces of equipment notably reduce the displacement of the ship. And the same thing happens with the propeller because, although its surface is a lot smaller than that of the ship’s wet hull, its surface area is multiplied by its many revolutions at high speed.

The objective is that it should always be clean of horrible incrustations and calcareous deposits.

Clean fuel tanks are crucial to avoid diesel engine failures

You might have noticed it before :

  • loss of of engine-power
  • excess engine-smoke
  • slimy and dirty or even clogged fuel filters

These symptoms are caused by dirty fuel tanks.

Due to the natural process of fuel degradation (micro-organisms, bacteria and enzyme activity, fungus, yeast and mold) over time, a sludge of waste products accumulates in your fuel tank.

This sludge will form a coating or bio-film on the walls of your fuel tank and clog your filter.

Some people use biocides or chemical products but this makes the situation even worse ! Some of these products even develop bio-film throughout the entire diesel fuel system which causes dramatic filter plugging. Moreover the application of these products are a never ending story and cost a lot of money.

The only good solution is a Harsonic® device which prevents problems and clean the tank completely of bio-film. Harsonic® prevents the built up of the very first step of fouling, which is bio-film.

The only effective device which can avoid biofilm is Harsonic®.
Prevent built up from the very first step.

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