When selecting a pond liner there’s 4 main choices. PVC, HDPE, EPDM and Rigid liners.
All should be fish safe and UV stabilised. PVC (Polymerizing-Vinyl-Chloride) and HDPE ( High-Density polyethylene) are by far the cheapest.
While EPDM (Ethylene-Propylene-Diene-Monomer) is easily the toughest and best pond liner available.
Rigid liners are strong and durable, but are limited in size.
PVC and HDPE are cheaper and have a few limitations.
This video talks about these choices so you can determine which pond liner is right for you.
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