Heavy Duty Pond Liner — HDPE, 0.12 mm (5 mil) Key benefits Durable and weatherresistant: Made from density polyethylene (HDPE), the 0.12 mm / 5 mil liner withstands outdoor exposure and extreme weather for longterm pond use. Safe for fish and plants: The material is designed for environmental safety so it can be used with aquatic plants and fish. Flexible and : The membrane bends and folds to fit almost any shape and can be cut to the exact size and layout required for your pond. Easy to install and maintain: Lays flat without tools, reduces soil buildup on the pond bottom, and is easy to clean for routine maintenance. Protective barrier: Forms a waterproof layer that prevents harmful substances in soil from entering the pond, helping keep the water cleaner and supporting a healthy natural environment. Features Material: Heavy Duty HDPE for strength and long service life. Thickness: 0.12 mm / 5 mil. Construction: Bottom layer provides a flat surface to reduce soil accumulation; side includes a round cobblestone layer for added texture and stability. Flexibility: Easily cut and shaped on site to match irregular or custom pond outlines. Function: Waterproof pond film/tarp that serves as the primary barrier between soil and water. Practical use scenarios Backyard ornamental pond: Line a decorative garden pond with plants and small fish; the liner prevents ground contaminants and holds water reliably. Small koi or fish ponds: Use for fish habitats where material safety and a stable waterproof barrier are required. DIY pond installations and water features: Ideal for customshaped water gardens, raised pond containers, or temporary ponds where quick, tool installation and easy cleaning are priorities. Installation tips Unroll and allow the liner to relax before shaping. Position so the bottom layer lies flat to minimize soil pockets. Trim to fit edges and overlap where ; secure edges with rocks or soil. Place cobblestone or decorative cover on the layer if desired; the textured helps keep the liner in place. Clean with nonabrasive methods to preserve material integrity. What this product does not change Maintains original HDPE composition and specified 0.12 mm / 5 mil thickness. Continues to function as a flexible, waterproof pond membrane suitable for plant and fish use without additional additives or modifications.