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Koi keeping Outdoors

An outdoor garden pond is the ultimate setting for fully appreciating the beauty and elegance of Nishikigoi. The optimum environment for koi is a recirculating system that has good filtration, both mechanical and biological. Outdoor ponds can be constructed with concrete, fiberglass or even vinyl sheeting. With the development and availability of ready-made filtration systems, it is possible to enjoy koi keeping in any setting, from traditional Japanese style gardens to modern ponds designed strictly for raising koi.


  • Fish net
  • Water filter
  • Water cleaner
  • Food

Daily Maintenance

You must prevent dust, fallen leaves, rain and sand from falling into the pool. Any detritus or mulm which accumulates at the bottom of the pool should be removed. Once every 2-3 weeks clean the filter. Take care not to overfeed.

Important points to consider

It is very simple to keep Nishikigoi if you have equipment for filtering and cleaning water. It is advisable to consult a Koi dealer or specialist as to which type of filter is most suitable for you. The most important things to beware of are:

  • Overfeeding
  • Overstocking
  • Changing the water too often
  • Cleaning the filter too often

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