In 2018 we have built our natural 15m x 6m swimming pool that include no chlorine nor chemical nasties! The pool is filled with water from our natural spring, and is purified through a first pond that include water lilies, rushes and paper reed plants.
The water is then filtered with a pump that includes South African zeolite rather than sand. The mineral zeolite provides a great water treatment as it is naturally absorbent or pollutant and is non-toxic. In the water we also use effective microorganisms (as described here) to kill pathogens and algae.
Our guests can enjoy doing lapses in this 15m x 6m wide pool, as long as they do not use perfume, sunscreen or cream that may severely perturb the fragile ecosystem we have put in place.