The 6' x 11' Oase FiltoClear Pond Kit contains everything you need to build a pond. All components are properly sized to match and guesswork is thus eliminated. The 6' x 11' Oase FiltoClear Pond Kit includes a Firestone PondGard EPDM Pond Liner, Pond Liner Underlay, Oase AquaMax EcoClassic 1900 ...