The basics on how to keep your koi fish pond clean are pretty straight forward. Whether you have a simple pond with a few fish or elaborate waterfalls with fountains and plants the steps are essentially the same. You’ll need a fine mesh net, de-chlorinator, lots of fresh water and an air stone or pump to oxegenate the pond water.
A good pump and great pond filtration will go a long way to keeping the koi in a healthy environment; yet consider it necessary (and part of the enjoyment) to be cleaning your koi fish pond regularly. This helps to maintain an healthy environment for your Koi and yourself! Overfeeding is one cause of koi ponds needing cleaning sooner rather than later. Uneatn food will sit on the bottom of the pond and release toxins into the water as it decomposes. This can be prevented by skimming away uneaten food with a fine mesh net about five minutes after your koi have been fed. Another way to keep water healthy is to regularly drain away about ten percent of the total water in the pond, and replace it with fresh water. The drained water is excellent for use on house and garden plants.
Keep in mind the following when keeping your pond water clean:
- Coins are toxic to Koi. Never throw coins in the pond
- Chlorinated water is dangerous to koi. Neutralize it before adding to pond.
- Ideally, keep the pond aerated and filtered 24 hours a day
- Lastly, avoid debris from accumulating at the bottom of the pond

