I'm using a diy koi filter (and by no means is it an optimum design).
I've got about 2000 litres of water in the ponds and tho I am struggling with green water, the solid waste is being managed. This is for 7 ducks.
Koi filters will work especially if you go with a gravity fed system (mine is pump fed and not as good because of this fact)
Edit - don't buy a filter off the shelf as most can't cope even with goldfish! Unless you buy a thousand pound drum filter that is!!
I've got about 2000 litres of water in the ponds and tho I am struggling with green water, the solid waste is being managed. This is for 7 ducks.
Koi filters will work especially if you go with a gravity fed system (mine is pump fed and not as good because of this fact)
Edit - don't buy a filter off the shelf as most can't cope even with goldfish! Unless you buy a thousand pound drum filter that is!!
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