Four layers of filter also needs to be installed to maintain the cleanliness and smoothness of the water supply. Four-layer filter is a filter consisting of the first filter consisting of gravel, sand, and the fibers which function to filter waste and pollute the pool mud.
Koi Fish
The second form of carbon zeolite filter that serves to eliminate toxins, odor and kill germs. The third filter in the form of pesticides that do not kill the bacteria that play a role in the decomposition of the water purification process. While the fourth filter in the form of plants or rocks that can bind to dirt.
The degree of acidity (pH) of water suitable for koi growth is 6.5 to 8.5. To keep the water circulating pump can be installed that can deliver as much as 25 liters of water per minute. In this way, the pool water does not need frequent cleaning, but it needs to do is clean the filter and the filter tub. The trick, spray the filter with clean water for about 5-10 minutes in length.
When using this filter, replacement water should be done every two weeks. Aim is to remove toxic substances from food scraps that break down into nitrites that are harmful to the health of koi.