“Wait, so it’s basically a natural filter?”
Koi ponds with streams have better filtration. We line the bottom of streams clients have us build with rocks and gravel (they have several benefits). Beneficial bacteria that break down waste grow on these rocks. This means less waste in your pond and your other filters won’t need to work as hard.
The rocks and gravel also catch larger and suspended solids. These solids would otherwise break down in and cloud your pond water.
Your water can be cleaner, your filters shouldn’t wear down as quickly, and your fish will be happier.
“Plus, having a koi pond with a stream would be nice. The sights and sounds of running water are quite relaxing. We can also have the stream waterfall into the pond,” Angie points out.