Waterproof masonry, such as concrete, is ideal for water features as it seal in the water, whether it is a raised or sunken pool. If you are choosing a material with joints, such a brick or rocks, they will leak so you should add a specialized render to the interior of the pond. You can choose colored or clad with tiles or a waterproof membrane such as PVC. Do not add any decoration, made of material, which can puncture or damage the waterproof liner. In addition, the joints where pipes enter the pool should be watertight. You can line the edge of a pond liner with flat stones will protect it, but it needs to be smooth-edged to prevent punctures. Natural stone has been used for hundreds of years to build water features, especially fountains. And when it comes to natural look, nothing beats it. You can use sandstone or marble, which are available in variety of colors and patterns. Granite is a very strong and natural material.
Dig the Hole
Dig a hole wide and deep enough to accommodate the pump and pond.
Spread the Underlayment and Liner
Underlayment protects the rubber liner from tears caused by roots and rocks. Spread out a large piece so it covers the bottom and sides of the hole and extends up and out of the pond. Spread a large piece of pond liner so that it covers the underlayment. Temporarily secure both pieces with large rocks.
Position the Pump
Set the pump housing into the pond at correct height. Carefully position rocks around the base of the pump to keep it in place. This is also a good time to add other rocks and decorative features to the inside of the pond.
Fill the Pond
Fill the pond with water so that the underlayment and liner settle into place. Continue filling until the appropriate level is reached. Attach the pump to a water source.
Complete the Pond
Arrange rocks around the edge of the pond to conceal the underlayment and liner. Trim off any excess. Add water plants and other decorative features to complete the pond.
Test the Fountain
Plug in the fountain and turn it on the fountain to ensure that it works properly.
Care and Maintenance
Basic water feature maintenance means keeping the water clean, clear, and free of organic debris. Also, water levels must be monitored because water evaporates or splashes out. This can be accomplished manually or by installing an autofill device.