When a pond water feature is well designed and built, koi will naturally help balance the entire pond ecosystem. However, many pond owners fear that the fish will be harmed or will not survive.
Deck and Patio’s Outdoor Living Expert, Bill Renter, offers encouragement: “While it’s true that koi can be tempting to cats, raccoons, and herons, etc., there are precautions one can take that will mitigate these threats.”
For example, adding koi castles and tunnels at the bottom of the pond will give fish a safe place to hide from many predators. Also, including rock overhangs around the outside of the pond, which first and foremost will make any pond appear more natural, also discourages cats and raccoons from reaching into the water after the fish.
In addition, planning a water feature with sufficient water depth can dissuade raccoons and cats further, since neither enjoy swimming to get their dinner. Plus deeper water at the edges (more than 18” deep) discourages heron wading. Another helpful idea is adding a waterfall feature. The continuous movement of its water, or even water from nearby sprinklers, we have found will put off many avian predators.
Other precautions koi pond owners can take is including scarecrows, such as owl statues. In the end, if all else fails, a netting can always be installed over the pond.
Here’s some of The Deck and Patio’s favorite award-winning pond features. And, yes, even if not picked up in the pictures, there’s koi in each and every one.
Koi is a healthy part of this pond’s natural ecosystem; they have lots of room to hide as well as swim. There are also plenty of rock overhangs to discourage predators.
The homeowner wanted to accentuate the beautiful 1880 stone bridge structure with a reflecting pond. To allow the entire stone gazebo to reflect in the water, the pond had to be more than 250 feet long and 45 feet wide. This created the perfect habitat for koi. Lots of flowing water, rock overhangs, and lots of space to hide.
When creating a new pond, we consider each rock’s form, texture, shape and height. In addition, incorporating such finishing touches as plant material and gravel helps it appear as if it was created naturally.
We always look over the property for any new pond — both from inside and outdoors — in order to place the pond in the perfect location. Since in the northeast, we spend more time indoors that in our yards, it is essential to see, and perhaps hear, any water feature from key indoor locations.
Having the force of moving water into your pond is not only an aesthetic choice, but will deter many natural koi predators. Also —even if it comes from nearby sprinklers — pond water movement helps keep the pond ecosystem healthy by eliminating stagnation.
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