1.8 mil (0.12 mm) HDPE Pond Liners for Outdoor Fish Ponds, Streams Fountains and Water Gardens Key benefits Durable and flexible for outdoor use, resisting cracking and tearing UV and ozone resistant to stand up to sun exposure and environmental conditions Puncture and tear resistant to protect against rocks, roots and sharp edges Waterproof to maintain consistent water levels and prevent leaks Why you need this liner Keeps soil and dirt from entering the pond, helping maintain clean water for fish and plants Provides a stable base for pond features such as waterfalls, streams, and fountains Helps extend the life of your pond by reducing water loss and sediment intrusion Important attributes Material: HDPE Thickness: 1.8 mil (0.12 mm) Color: Black, which minimizes visible soil and helps prevent dirt from entering the pond Function: Acts as a pond liner and underlay to create a flat surface and protect the pond base Easy to use and set up The pond liner underlay provides a flat surface for your garden pond, reducing soil buildup A layer of rounded pebbles on of the pond liner will extend the life of the pond Compatibility and applications Suitable for outdoor use with fish ponds, streams, fountains and water gardens Can be used as a base liner or underlay to create a level foundation for various water features Use scenarios Scenario 1: Install in a backyard koi pond with a small stream and fountain, providing a waterproof base and protecting water quality Scenario 2: Create a water garden with plant shelves and a decorative fountain, using the black liner to keep soil out of the water and a pebble for durability and aesthetics Scenario 3: Renovate an existing garden pond or build a water feature outdoors, using the liner underlay to create a flat base, reduce soil buildup, and extend pond life with a pebble Performance notes Designed for outdoor ponds and water features, offering longterm protection against weathering while maintaining water containment and quality