Aquascape Pond Underlayment 15 × 25 ft is a Aquascape-branded product in the ownkoi catalog. Non-woven geotextile underlayment from Aquascape, supplied as a separate-cut sheet to install beneath a flexible pond liner. Protects the liner from puncture by rocks and roots. Specifications and pricing reflect the manufacturer-published or retailer-published data at the most recent catalog refresh. Verify the live listing on the source retailer page before purchase.