Fish Pond Liner 4.7 Mil HDPE – Waterproof Koi Pond, Waterfall & Garden Fountain Liner
Create a safe, durable, and leak-free water feature with this 4.7 Mil heavy-duty HDPE fish pond liner. Thicker than standard liners, it delivers superior puncture resistance and long-term waterproofing — making it the ideal choice for koi ponds, garden fountains, backyard waterfalls, and outdoor water gardens.
Key Features
4.7 Mil Thickness: Thicker gauge HDPE provides enhanced puncture resistance and durability compared to standard pond liners
Fish-Safe HDPE Material: Plasticizer-free, non-toxic construction creates a safe habitat for koi, goldfish, and all aquatic life
Fully Waterproof & Leak-Resistant: Reliable water retention keeps your pond full and your soil dry
UV & Weather Resistant: Engineered to withstand UV exposure, extreme temperatures, and seasonal weather changes
Flexible & Easy to Cut: Pliable black liner conforms easily to any pond shape — simple to trim and install without special tools
Multi-Purpose: Suitable for koi ponds, fish habitats, garden fountains, waterfalls, raised planters, and cisterns
Two Sizes Available: 10×10FT and 13×33FT to suit different pond dimensions
Specifications
Feature
Detail
Material
HDPE (High-Density Polyethylene)
Thickness
4.7 Mil
Color
Black
Waterproof
Yes
UV Resistant
Yes
Fish Safe
Yes (Plasticizer-Free)
Available Sizes
10×10FT, 13×33FT
Suitable For
Koi Ponds, Fish Ponds, Garden Fountains, Waterfalls, Planters, Cisterns
Use Scenarios
Koi & Fish Ponds: Build a safe, non-toxic pond environment for koi, goldfish, and other aquatic species
Garden Water Features: Line decorative garden fountains and streams with a reliable waterproof barrier
Backyard Waterfalls: Create natural-looking waterfall channels with long-lasting leak protection
Raised Planter Boxes: Use as a moisture barrier in raised garden beds to retain water and protect structures
Cisterns & Rainwater Collection: Suitable for water storage and rainwater harvesting applications
Installation Tip: Place a layer of old carpet or sand beneath the liner to protect against sharp stones and extend the liner’s lifespan.
