1.8 mil (0.12 mm) HDPE Pond Liner — for Outdoor Fish Ponds, Streams, Fountains and Water Gardens Key benefits Reliable waterproof barrier: HDPE material and 1.8 mil (0.12 mm) thickness provide an effective, long‑lasting waterproof layer for ponds and water features. Protects fish and plants: Black color blocks soil and debris from entering the water, helping maintain a cleaner, safer environment for aquatic life and plants. Durable and low maintenance: Formulated to resist punctures, tears, UV exposure and ozone aging so the liner performs outdoors with minimal upkeep. Flexible and easy to work with: Thin, pliable sheet conforms to shapes and contours of ponds, streams and fountain basins for easier installation and a neater finish. Extends service life with simple protection: Placing a layer of rounded pebbles or a protective underlay reduces direct wear and protects the liner from sharp objects. Material and performance Material: density polyethylene (HDPE). Thickness: 1.8 mil (0.12 mm). Performance attributes: Waterproof, puncture and tear resistant, UV and ozone resistant, flexible for forming around curves and steps. How this product solves common problems Prevents seepage and soil intrusion that cause muddy water and unstable pond edges. Limits sunlight and air exposure to the liner to reduce material degradation over time. Provides a consistent base for planting zones, fish areas and decorative elements without frequent patching. Compatibility and recommended use Designed for outdoor use in fish ponds, garden streams, fountains and water gardens. Works as a primary liner for small to medium features or as an underlayment/protective layer beneath heavier liners or decorative stone. paired with rounded pebbles or an underlay to protect against sharp stones and roots. Practical application scenarios Backyard fish pond: Line the excavation with the HDPE sheet, smooth wrinkles, cover exposed liner edges with soil or edging, and add a thin layer of rounded pebbles to protect the surface where fish and plants are kept. Garden stream or meandering watercourse: Use the flexible liner to follow curves and changes in depth; secure edges under turf or stone to create a clean channel that resists leaks and soil washin. Fountain basin or installation: Cut the liner to shape for small basin refurbishments; the thin flexible material allows tight corners and a neat fit, while its UV resistance suits exposed fountain locations. Installation tips Prepare a flat, debris base or use an additional underlay to reduce puncture risk from stones, roots or sharp objects. Smooth the liner into place, trimming excess while leaving enough material to anchor edges under soil or edging material. For longer life, place a covering layer of rounded pebbles or protective fabric where the liner will bear weight or abrasion. What you get 1.8 mil (0.12 mm) black HDPE pond liner suitable for outdoor ponds, streams, fountains and water gardens, with the listed properties and intended uses. Note: Use appropriate installation techniques and protective layers for your specific project size and local conditions to maximize performance and durability.