Sorry to burst your bubble and I honestly don't mean to be negative. Maybe I'm just jaded from my summer of Duckpond hell - but I had a small plastic container with holes too small for duck bills. I tried various filters like sponges (bad idea) scrubbers (better) pillow stuffing (so/so) and...
Please do, I want pictures!
I've tried so many methods that it makes me dizzy. I get half-done and realize, oh yeah, I've done this before and it didn't work.
In my case, they kept clogging the pump that was supposed to send the water "to" the filter.
So I dug a hole next to the pond and put the containers below the water level and just ran a hose from the pond (they have little plastic hose fixtures you can add to the liner that won't leak) to the...
I'm still new at this, I got my ducks in the spring. But as far as I can tell, you can't keep it clean without frequently changing the water. Well, let me rephrase that. You can't keep it clean. I would love to hear from anyone who's been successful.
My pond is about six feet by ten feet...