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... acted the factory that made the water circulation system and ordered a set of equipment. A pump will be installed on the east side to use the high-intensity air current generated by the pump to promote the water flow. This will not let the fish be no matter how dense the fish farming density is. Hypoxia. At the same time, the feces at the bottom of the pond can be washed into the purification area. After a circle of purification, the water quality is clear and can be recycled. After the feces ha ...
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