Some results of the application of rare earth elements in management and treatment of pond water for white spot cardinal shrimp farming

Aquaculture industry is a spearhead industry with great export potential including white spot cardinal shrimp farming. However, shrimp farming is a production industry with capable of high efficiency but also risky due to problems of shrimp pond water pollution and disease problems on shrimp. In this report, we present some results of the application of rare earth elements in the management and treatment of shrimp pond water at Thach Hai Fisheries Service Company, Thach Hai commune, Thach Ha district, Ha Tinh province. The results of the application on ponds with area of 1500- 2000 m² show that: rare earth elements are capable of stabilizing pH of pond water, reducing harmful gas emissions, eliminating toxic algaes, creating favorable conditions for developing of beneficial algaes, provide trace elements necessary for shrimp cultural, reduce the cost of chemicals to treat pond water, reduce water resource costs, reduce spending food costs.... and allows significant economic efficiency gains compared to control ponds that do not use rare earth elements. (author)