The second way to install a fish pond is through the use of a flexible liner. These liners are more like a very thick above ground swimming pool liner and are also black. The offer the ability to make an irregular shaped pond or a pond that is larger than the preformed ponds. When you plan you pond make arrangements to have both shallow and deep areas. This allows the fish to enjoy the warmer waters of the shallows when spring comes around. Line the walls of the goldfish ponds with old newspaper to help protect the liner during installation. There is a felt like material that lines the pond before the water proof layer is added. Use landscape bricks to hold the pond liner into place.
For even more visual interest, add colored lights and fountains.
