A natural bath does not use any chemical elements. The water can be purified by plants but we use filters and bubblers followed by disinfection by UV radiation and ozone.
The result is very pure water with a light biofilm on the walls, which gives the characteristic impression of mountain lakes.
This system, used by professionals, saves water and electricity while ensuring exceptional quality and softness.
Water is considered "disinfected but not disinfecting", so it is a fragile environment that must be taken care of.