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Aquaculture is becoming increasingly important in meeting the ever-increasing demand for fish and in protecting natural stocks. Nowadays, systems with closed circuits are increasingly used for aquaculture because their impact on the environment is limited and the water that is pumped into the circuit is treated. Biofilters are among the options for water

treatment. These can be designed as trickling filters or as a submerged fixed bed. WaLuTech offers packing for containers with surfaces of 90 – 1000 m²/m³. It uses both structured packages and plastic packed beds. The extensive use of various packing types enables Walutech to provide solutions for all biofilters operated using packing materials. Thousands of m³ of packing in the most varied types of biofilters have proven their high performance rates.