Rapids

How can you make the water at the pond move like in the rapids?

I heard that both payaras and goliath african tiger fish live in rapids and they need fast flowing water to become healthy. But the pond were gonna make is a koi pond( a big one ) but the water is stagnant. Is there any device that can make the water flow(not too fast).

Public Comments

1. I woulkd suggest adding a pump that would aerate the water and mix the hot and cold water. Also add oxygenating plants that well help improve the environment and make it less hostile
2. me too suggest the first answer :_ above one good luck friend :)