Why does corrosion cease? The effect of the galvanic cell provides a reducing effect on corrosion sites. A stable form of oxide is created which provides a protective covering whilst the Scale-buster® is in use. The patent of the Scale-buster® allows for use of materials in its construction that will not lead to corrosion/blocking within the device. It is a known fact for instance that stainless steel totally immersed in water suffers with crevice & pitting corrosion due to the chloride ions found in water. The Scale-buster®does not use any stainless steel for the construction of its special cavitation/turbulence chambers.