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Two Ways to Prevent Pond Liner Leaks

If you want a pond on your property, then you will need to do a wide variety of things besides digging a large hole to place water into. While digging is an important first step, you will also need to place a pond liner across the bottom of the opening. This liner helps to retain the water inside the hole so it does not leach down into the earth and drain into the water table. Polyethylene, rubber, and PVC are all materials that may be utilized to make your pond liner. Unfortunately, all three of these materials can wear down over time and form a leak. You can prevent leaks quite easily, though, by doing a few things during the installation process. Keep reading to find out about a few examples.

Consider an Underlay

In some areas of the country, it may be possible to place a pond liner directly across the bottom of the dirt hole that forms your pond. However, this is only advisable if the ground around your home is made out of soft materials like sand and organic matter like decaying plants. Also, silt that contains extremely fine particles and a great deal of nitrogen-rich material will be acceptable next to the pond liner. However, most soil in the Unites States is made up of a combination of materials that include sand, clay, dirt, minerals, and rock. Clay, rocks and minerals like quartz and feldspar are hard and they will cause holes to form in the pond liner if they sit right next to the liner. The best way to avoid this is to make sure that there is a cushion placed between the soil and the liner. These cushions are usually called pond underlays. The underlays are geotextile formations made out of polyester or polypropylene. They look a lot like felt and they are permeable to allow water to move through them.

While the underlay can help help to create a puncture resistant pond liner, it will not necessarily create a puncture proof liner. This means that you should make sure to remove any rocks or other hard objects from the bottom of the pond before securing the underlay and liner. Also, think about spreading a thin one-half inch layer of sand along the pond bottom to provide a second layer of cushioning to keep damage at bay. 

Choose a Pond Filter

While most ponds form a natural ecosystem of their own that includes plants, algae, frogs, and other wildlife, this does not mean that you should allow the pond to build its own environment unchecked. If you do this, then you may allow a variety of different things to build in the water. Ammonia is the most common substance from wastes left by animals. Fecal matter, dirt, rocks, and other debris will fall into the water and build a layer of sludge on the bottom of the pond. Ammonia can raise the pH of the pond water and cause corrosion or deterioration issues across the pond liner. The build up of the other organic materials can also allow algae and plants to grow that may rupture the liner.

One of the best ways to reduce leaks and damage is to install a proper filter in the pond. This will help to remove organic matter and ammonia before it has the chance to build. Also, the filtration system will help to circulate water so that algae cannot grow effectively on the liner. There are a wide variety of filtration systems you can choose from. Just make sure that the device is rated to filter the amount of water that is held within your pond. 

Pond liners are important to keep the water in your pond, but you will need to make sure that the liner does not form a hole or leak. You can help to prevent leaks by placing an underlay as well as a pond filter.