Swimming pools or swimming baths encounter several problems, dependent on water quality. In the case of very hard water, large quantities of scale are deposited on the wall of the pool. Even in the case of small quantities of scale, scale encrustations build up along the evaporation edge, and these encrustations can be removed only with great difficulty.
Under normal conditions Merus removes this scale and solid scale encrustations generally no longer occur. Rather, the scale can generally be simply wiped off. Merus also changes the water so that, frequently, far less algae or even no algae build up in the water. This allows the use of chemicals to be appreciably reduced.