6.) wastewater by natural way with initiative, making the study of experimental research, show that some types of fish are used, wastewater. These fish would have to eat the organic matter in the waste water. It turns out that some of the fish genus with which the organ in respiration, such as the gourami fish raising in the mushroom salit waste water and prefer to eat organic, thus helping to reduce pollution in water sources. This method can be used to advantage in the wastewater, which is low cost and can increase productivity, aquatic animal.
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