The fish oil on the feed surface and the fat excreted from the waste bait will float on the surface of the water. After being oxidized and decomposed, it will not only pollute the water quality, but also make the harmful bacteria propagate, resulting in more diseases. The foam produced by the excessive organic matter on the surface of the water surface will also be unable to discharge the surface pollutants in time because of the traditional single channel bottom drain pipe, resulting in the continuous pollution of water quality.
Main functions of surface water drain tank:
First, it can increase the exchange of water on the surface of the aquaculture pond, and timely discharge impurities such as fats and oils from the feed and foam in the water.
Second, to a certain extent, it can control the level of water in the pond;
Third, the "plug in" sewage system can complete the drainage of the water body of the aquaculture pond on the pipeline ditch, which can save the cost of the drainage valve.