It has a low production cost, easy maintenance. Have a long life and efficient wastewater treatment better than using chemical-storage tree and water hyacinth which has a high cost and ecological destruction?
It costs less to produce. Easy Maintenance Last for long and efficient treatment of wastewater, better use of microorganisms and canals, which are costly and damaging ecosystems.
It has less production cost, maintenance is easy. Long lasting and effective treatment is better than the use of capacity and water hyacinth, which first aria with high costs and destroy ecology