Pond liner AquaLiner 0,5mm PVCUV stabilised, frost resistant, as well as being fish and plant friendly. This Ubbink pond liner provides a solid basis for your pond! The film is made of high grade, durable materials. It is also resistant to roots and has flat overlapping seams. It is best to place a fleece felt mat under the pond liner to protect the liner. If there is a risk of roots growing through it, place a weed suppressant ground cloth under the liner. To install the pond