You can put together a surprisingly capable pond filtration system using commonly found household tools and a few components purchased from your local aquarium supply or pet store.
Pond filtration system diagram.
Bio clean pond filter.
Notice the placement of the jets.
Gravity does all the work for you and less than 20 buys all the needed parts to assemble this water filtration system for a diy koi pond.
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There is less regular maintenance or cleaning required since the aerobic bacteria eats the waste and cleanses the water through.
This simple biological filtration process uses a gravity flow design that eliminates all moving parts from the filter and therefore removes common points of failure.
The jets are positioned to flow the water along the perimeter of the pond walls.
The biosteps 10 pond filter is the number 1 choice for koi ponds up to 1000 gallons and water garden ponds up to 2700 gallons.
While there are commercial pond filter systems you can purchase many people choose to build their own to save money.
Gravitational diy pond filter.
View 31 best koi pond filter system images.
The diagram below shows a top view of different shapes that can be considered self cleaning.
In simple terms the media within the filter creates a huge surface area which becomes home to many millions of helpful bacteria.
Up to 5000 gallons.
Saved by paul chay.
It is vital to keep these oxygenated by passing pond water through the filter 24 hours a day.