In raising your Koi fish, there's always a need for you to have the important filtration system for your Koi pond. The Koi is known for its sensitivity to the water quality compared to some of the other fishes, that's why you really need to consider when it comes to having a filter in your Koi pond.

The filter is an equipment that helps in controlling the biological balance within the pond. It removes the waste produced by the Koi. In the wild, the waste that comes from the fish is being removed through the water volume of the area, as well as the current of the water. So, when the fish is being placed in a controlled environment, they need to have this natural function too. There are two kinds of filters: the biological and the mechanical. The biological filter depends on the bacteria to break down those toxic wastes such as ammonia (or pH) into nitrates which are less harmful substances (high levels of pH can be very harmful for your Koi). Large amounts of nitrates are harmful to your Koi.

A good filter for your pond will still be able to work properly without the use of a pump to force the water through to it. As the pond is a big area, the strength of the filter is not enough to circulate the water. The pump is the one that pushes the water and also the one that circulates the water through the pond. Also, water devices such as a waterfall or a small fountain can be added, which stirs up water and allows oxygen from the air to be folded into the water (a process known as “aeration”). Remember that it's quite important for you to have a constant supply of oxygen for your Koi.

It's also necessary to test the water's chemical make up on a weekly basis, and this can be done in two ways. First option is to bring a sample of the water coming from the pond to a local pet store and get it tested for you, while the second option is to buy a home testing kit with which you can test the water all by yourself. Make it a point that you keep the chemical mixture of your pond's water to a normal and healthy level for your Koi.

Maintenance is always needed for your own Koi garden. It takes just minimal amount of time and effort to maintain your Koi pond, and having vital systems in it like the filter is one of the things that pond owners really need to have. Having a healthy and magnificent Koi garden (combined with the elegant and beautiful Koi in your pond) makes the hobby of Koi keeping really a rewarding one!