Geomembrane is very good. the lotus root pool generally use 0, or soil, with a lot of brands, the paving direction should be split joint, and then laying the geomembrane, you can also use glue stick to paste pvc board from the market, (you also can prepare a few sandbags, almost .0,which can be used, we can use a hot air gun to weld, all hand hit, and it can be used.