Waterfalls or streams can be attractive additions to koi ponds, and also serve a useful purpose in improving aeration and circulation. To do this, you’ll need a reliable pump that can move water from the pond up to the top of the stream or waterfall, where it flows back down by gravity. The structure can be built using rocks, liner, or pre-formed features, and should be designed to create a steady flow without splashing too much, which can waste water and stress the fish.
Careful placement is important so the flow doesn’t stir up debris or disrupt calm areas where koi like to rest. The water feature should be integrated into the pond’s filtration system, often with a biological filter hidden at the top, allowing clean, oxygenated water to return to the pond. Streams and waterfalls not only make the pond more attractive, but they also help maintain a healthier environment for the koi by keeping the water moving and oxygen-rich.
