The Above Ground Koi Pond
Water gardening is becoming increasingly popular here in United States and more and more folks want their own koi pond. But what if you’re not blessed with soil that is easily excavated? There’s a solution and it’s the above ground Koi pond and if designed correctly you can even use it as a support structure for an items such as a deck or Pergola.
As you’ll see in the video below all it takes is a little imagination and you to can have an above ground koi pond that will last you for many years or even decades to come. As a note of warning though I wouldn’t suggest this type a pond for anywhere that stays below 20°Fahrenheit for more than two weeks at a time, unless you install a heater to keep the water above 32°Fahrenheit. Most fish and water lilies don’t like being turned into solid blocks of ice.
Here are some major points of note about this above ground Koi pond.
- The pond is constructed entirely of 4×6 landscape timbers and is built on top of its own footing.
- On the inside of the pond the landscape Timbers were lined with 1 inch foam board insulation prior to liner installation, to not only to protect the liner but to also slow down thermal transfer as well.
- The upper parts at either end of the pond are set up as bog areas that the water is pumped through so the plants can absorb the nutrients created by the fish. The water is then returned to the pond by way of the spillway.
- The pump (1,200 GPH) for the pond is located inside the pond itself and distributes the water to each bog area through CPVC piping located outside the liner in the bottom of the pond.
- The pond is also used as a support structure for the deck.
- If you have small children around the house then a railing should be placed in front of the pond to prevent unexpected swimming expeditions and tragedy.
This above ground Koi pond has been in place for over 10 years and some of the fish are older than that. There is no fancy filtration, just a simple mechanical filter to remove some of the algae. All removal of fish produced waste is handled by the plants as it is in nature. So as you see an above ground Koi pond doesn’t have to be super complicated just put together with little thought.