Organica Biotech Pvt. Ltd. Offers Clarifier for Natural and Man-made Water Bodies. Organica Biotech Pvt. Ltd. Is an ISO 9001:2000 certified company. Clarifier for Natural and Man-made Water Bodies help restore natural balance in situations where environmental factors have led to unstable and unhealthy water quality conditions. In many cases chemical treatments are used, but chemical treatment creates anoxic conditions at the bottom leading to even more phosphorous from the sediments. The killing of algae and weeds is temporary. Chemical Treatment cannot remove organic muck from the sediments and Chemicals can be toxic to other aquatic life.