New life for water tanks

Converting tanks into biological pools depends on several factors, such as size, depth, and other characteristics of the existing tank. For example, on a century-old farm in the north of the country, there was an old stone block tank. Its position, shape, and size allowed it to be incorporated into the design of a biological pool, which operates in two basins, separated by a low overflow.
The existing basin became a plant area because it is shallower and located at a slightly lower level. The new basin serves as a swimming area and is adjacent to the farm’s historic garden. Circulation through a submersible pump ensures water exchange between the two basins, and an external biofilter supports biological treatment.
A key element of the project, in addition to the existing tank, was the use of old stones. Once stored for new purposes, they became the rustic coping and finishing of the new basins. The patina of the old stones and basin contributed significantly to fitting the new organic pool naturally into the farm’s historic structure.