This project is aimed to grow grouper in 20 m³ recirculating aquaculture system (RAS) and shrimp in 200 m³ using biofloc technology (BFT). In RAS, grouper can raised at density as high as 50/m³ with survival and yield reach 95% and 30 kg/m³, respectively in order to lower the production cost and raise the product quality and profit. In BFT, vannamei can be raised at density as high as 350/m³ with survival and yield reach 85% and 6 kg/m³, respectively; and more than 80% of water use and water discharge will be saved.