How about the geotextile pond
You said to cover the fish pond, I understand is to build the bottom of the fish pond, but the use is not geotextile, but the composite geomembrane, the film is generally two layers of geotextile in the middle of a layer of geomembrane, , And geomembrane on both sides of the geotextile can prevent the bottom of the sharp objects pierced the geomembrane.
