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¹ University of Brawijaya, Department of Aquaculture, Jalan Veteran, Malang, Indonesia, 65145
² University of Brawijaya, Department of Chemistry, Jalan Veteran, Malang, Indonesia, 65145
³ University of Brawijaya, Department of Marine Science, Jalan Veteran, Malang, Indonesia, 65145
⁴ University of Brawijaya, Coastal and Marine Research Centre, Jalan Veteran, Malang, Indonesia, 65145
⁵ University of Brawijaya, Department of Aquatic Resources Management, Jalan Veteran, Malang, Indonesia, 65145 DOI : 10.4194/2618-6381-v21_3_01 Viewed : 5911 - Downloaded : 3338 Water quality and waste management are significant problems for aquaculture in Indonesia, including catfish (Clarias gariepinus) aquaculture. A combination of Aquaponics Systems and Recirculating Aquaculture Systems (A-RAS) has been developed to address this problem. This study analyzed A-RAS application for catfish (Clarias gariepinus) aquaculture by comparing water quality and production indicators between A-RAS and conventional methods. The results show that temperature, pH, dissolved oxygen, total organic matter, ammonia, nitrate and nitrite in A-RAS technology were 28.0-30.0°C, 6.5-7.9, 3.8-7.8 mg/L, 18.54-24.97 mg/L, 0.12- 0.28 mg/L, 0.12-0.13 mg/L, and 0.04-0.13 mg/L, respectively. Survival Rate, Feed Conversion Ratio, and harvest in A-RAS application were 85.5%, 1.1, and 26 kg/m³, respectively. A-RAS technology can maintain water quality to be reused in cultivation and increase yields by about 13%. Besides, water spinach can be an additional income for farmers. Keywords : Sustainable aquaculture, Water quality, Aquaculture waste, Aquaculture technology