Fish Pond Liner 3 x 4.6m x 0.5mm Garden Pool Membrane ReinforcedFish Pond Liner 3 x 4. 6m x 0. 5mm Garden Pool Membrane Reinforced Anyone with a fishpond on their property knows just how important it is to ensure that a fishpond is well maintained and properly lined. A well lined fishpond will help to prevent water leakage, sunlight damage, corrosion and ageing. The Randy and Travis Machinery Preformed Garden Pool Membrane Reinforced Fishpond Liner is a specialised fishpond liner that can help keep your fishpond