It looks kinda interesting being used in Europe over twenty years,
it eliminates the use of chlorine's on your skin.
You are basically building a pond adjacent to your pool about 18" deep for plants, the plants act as your eco system, water is slowly pumped between the two.
Still using your pool pump to filter thru sand or cartridge the add ozone or UV, no chlorine.
the claims are as follows
The pool can look literally the same as any conventional pool but the water is sensationally soft and free of any of the side effects of chemical pools.
A new generation of natural water filters now allows us to purify water on a micro-biological basis.
The filter technology consists of units of powerful micro-biology filters below a gravel surface. They are powered by submerged, low voltage (12 Volt) pumps, you can use solar also
This means you donít need any pump housing or winter maintenance for pumps.
There are plantings for every taste; ornamental, formal, lush, mono- or multi colored. You can use water lilies, Iris, Lotus, Cypress grasses etc. in submerged plant bowls, subtle plant niches, plant rows and circles
what do U folks think?