Just bought a home with a pond that seems half finished. They only placed one layer rocks around the outside, so you can see the black pond liner both inside & outside
VEVOR Pond Skins 20 ft. x 25 ft. Pond Liner 45 Mil Thickness Pliable EPDM Material for Fish/Koi Ponds Water Gardens, Black CTFSMHSEPDM20SZTDV0 - The Home Depot
The Most Comprehensive Guide to Pond Liners - PondMAXOnline
VEVOR Pond Liner 13 ft. x 20 ft. 20 Mil Thickness High Tensile Tear-Proof Flexible HDPE Pond Skins for Artificial Lake, Black FS-1320T0.5MMHBQ6V0 - The Home Depot
Large Pond Liners - Everything-Ponds.com
Custom Large Pond Liner | The Pond Guy
Amazon.com : Toriexon LDPE Pond Liner 15X20FT, 20 Mils Thickness Pond Lining for Fish Pond, Fountain, Koi Pond Liner, Waterfall and etc. : Patio, Lawn & Garden