Tập 122 Hồ chứa nước nuôi lươn, siêu bền, siêu rẻ (Eel farm).

Floating round pond, diameter 6m, height 1.5m. Total volume 42.5 cubic meters, total construction cost 20 million. Use HP shrimp farming tarpaulin for lining, 10-year warranty, thickness of tarpaulin is 5mm, tarpaulin is welded at home, 1 square meter of tarpaulin is 25k, transportation cost 600k, welding cost, installation of tarpaulin into mold is about 1.7 million. Total cost of tarpaulin to line the pond is about 4.2 million. The water reservoir has a funnel-shaped bottom (ore shape) in the middle of the pond, so it is very convenient for cleaning. The bottom is attached to the drain pipe so there is no water leakage. The tank floor is raised with sand, the surrounding wall is built with 20 bricks, 50 cm high, so water will flow naturally into the pond without the need for a pump.