A Guide to Modern Koi Pond Construction
Vortex filter chambers
It has been felt by many koi-keepers that with the square filter bays that the corners hold dead water, and so the circular vortex chambers were then also used as filter chambers. With the conical part at the bottom then all waste tended to move towards the drain.
This bank of 4 vortex chambers are joined together and
are similar to the fibreglass chambers we have already seen except for
the shape.
Grids are fitted above the cone to hold the media in the same way as with
the oblong filter bays.
These are free standing vortex chambers which can be added as required.
These
are generally more expensive, but you can get them in many sizes to suit
your needs.
In both these cases the first one is empty and used as the vortex settling chamber, and the others hold the filter media.
These vortex chambers have been popular for quite a few years now, and in many cases the filter media was usually Japanese matting, although other media can be used.
This website started with a booklet which I made up originally for the help of those members of the BKKS - South Wales Section who were intending to start building a koi pond, and as the website has expanded more information and articles from other people have been included. This is for general guidance only, and we do not take any responsibility for problems that might occur by following these ideas. It is important that you check out everything in your area, and check on local laws and rules that may apply.