The plants are used for the correct operation of the biological swimming pool. Firstly to take food released by the bacteria and secondly to create the visual effect of a natural pond. Many plants are adapted and the design is as far as your imagination allows it. It is recommended always to use plants which are known to thrive in your area.
In the residual water treatment, the plants play an efficient role due to their capacity to create close to their roots and rizomas a rich way in oxygen, where good oxidation conditions stimulate the aerobic decomposition of organic matéria and the growth of bacteria.