First, dikes and escape prevention facilities
Dikes should be built in geomembrane for fish farming to prevent fish from escaping. The wall of the dike and cement pool should be 40 cm above the water, and the anti-escape net is added to the pool. The middle of the dike shall be inlaid with wood or impermeable liners pond geomembrane, fish farming hdpe shall be as high as the dike, covered and inserted into the mud 20-30 cm deep, and the impermeable pool geomembrane shall be laid on the bottom of the fish pond.
Second, inlet and outlet
One end of the fish pond is provided with a water inlet, the other end is provided with a water outlet, the water outlet should be appropriately lower than the water inlet, to facilitate the addition of new water and sewage discharge. Metal or nylon netting should be installed at the inlet and outlet to prevent filth and wild fish from escaping into the pond or fish from escaping.
Third, catch fish pit
In order to facilitate fishing and fish hiding in the high temperature season, in the center of the pond to the outlet end, dug a fish collecting pit. The area of fish collecting pit is 1/5-1/3 of the total pond area, and the water depth is about 40 cm.
Four, the bottom mud should be covered with 20-30 cm of mud at the bottom of the pool,
and 10-20 cm of mud at the bottom of the fish pit.
