There are pond liners designed with biological filtration in mind for natural swimming ponds. While most pond liners are simply intended to hold water, some are specifically crafted to support the natural filtration process. These liners are typically made from materials like EPDM or RPE, which are durable and allow for the healthy flow of water which is involved in the natural filtration process.
Some liners are also textured or have features that promote beneficial bacteria growth, which is essential for breaking down organic waste in the pond. These bacteria help maintain a healthy ecosystem by naturally filtering the water, reducing the need for chemicals or artificial filtration systems. If you're looking for a liner that supports biological filtration, it’s important to select one that is non-toxic, UV-resistant, and allows for proper water circulation.
