Classical
swimming pond ...
... hase a water- and swamp plant area, which is connected either partially
or entirely to the swimming area, which is easily cleaned by a submerged circulation
pump (or a pump outside) and can be driven, if desired, by an additional solar
panel with a booster-system.
This pump is submerged in the deepest part of the swimming pond (or is positioned
outside) and the water is pumped up to the swamp area filter.
This type of natural swimming pond costs the least in tecnical terms, but the
owner / user must be a little tolerant of the animal life.
