Water Lettuce/Hyacinth with goldfish and koi?

[mtiller]

I purchased 4 water hyacinth and 1 water lettuce today (duckweed hopped along for the ride home) to put in my pond with my goldfish and koi. I've read that the two plants have/or can develop pretty extensive root systems. Would the fish keep this under control or would I have to manually do so?

[DAVIDFBT]

You would have to cut it on your own because the fish won't eat them. But its pretty easy.

[Fishy_Fun]

my water lettuce roots seem to fall once they get long and start growing a new root

[midiamin]

You fish will luv you for the Duckweed. They uv to eat it to clean out their intestines.

[mtiller]

yes I did notice that the amount of duckweed decreased since yesterday (if every plant was side by side the duckweed would cover about 1/3 of my pond). It'll still be present though, as it hitches onto my water lettuce and 4 water hyacinths. I'm also growing some in a small tank with some aponogeton and water lily bulbs (the lymphaea kind i think? or is it nymphaea..?)