Ways to Maintain Your Koi Pond
When it comes the time to change the water in any fish enviroment it would not be a good idea to change all of the water at the same time. Fish do not like to have any changes that are sudden in their environment. Any change such as temperature, pH, or chemistry to the water. If you have a good filtration system it should have a biological filter and also a mechanical filter. This is just like water found in the wild. The filter that you are using that removes fish waste that is dissolved is the biological filter. The filter turns the waste into nitrite and then it tuns the nitrite into nitrate. This happen to be done all in the filter system. Nitrate is harmless to the fish but it will allow build up in your pond that can harm your fish.
There are some water plants that you can purchase which will help remove the nitrates. But it would take so many plants to remove the amount of nitrate that you need them to. You could try a trickle tower to remove the nitrates in your koi pond however they are not cheap and giving the water a partial change would be more cost efficient. Which is like ponds found in nature. Water changes should be done often however they only need to be changed about ten percent every two weeks. When you do your water changes you should also check for nitrate levels this will prevent any discoloration in your koi pond. There are test kits that are available that will let you measure for nitrate levels, pH, nitrite, and also oxygen levels in you pond. Similar to Koi ponds naturally occurring in the wild.
If you are planning to use tap water when you fill up your koi pond you should also use additives that you can buy at the store to remove chlorine that has been added to the water. Chlorine will come out of the water if it sits for a few hours also.



