What is the best pond liner material for a fish pond?

The best pond liner material for a fish pond is reinforced polyethylene (RPE), as it is flexible, durable, affordable, and fish-safe. RPE's unique construction makes it more resistant to damage from punctures and tears than its competitors, as well as remarkably flexible, strong, and lightweight.

Many RPE liners are ANSI/NSF 61 certified for potable water storage, guaranteeing that no harmful chemicals will leach into the water over time. This is vital for the long-term health and safety of your fish. While some EPDM liners are advertised as fish-safe, the safety standards are determined by the manufacturer and are not consistent or as stringent as ANSI/NSF 61.


Liners by BTL

AquaArmor Pond Liner

The most versatile liner on the market today, AquaArmor maximizes protection from harmful UV rays, tear resistance and punctures that cause leaks. Simply the best liner on the market.

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