The thickness of an HDPE (High-Density Polyethylene) Pond Liner Manufacturer depends on various factors such as the size of the pond, the intended use, and the environment where the pond is located. Generally, for smaller ponds or decorative water features, a thickness of around 20 to 30 mil (0.5 to 0.75 mm) may be sufficient. However, for larger ponds or those intended for holding significant volumes of water, a thicker liner, such as 40 to 60 mil (1 to 1.5 mm), would provide better durability and resistance to punctures or tears. It's essential to consider factors like potential sharp objects in the area, ground conditions, and the weight of the water to determine the appropriate thickness for your specific pond project. Consulting with a professional or supplier specializing in pond liners can also provide valuable guidance tailored to your needs.