Koi pond filters are necessary to keep your pond water clear and healthy for your fish. Since the pond itself is man-made, it lacks that necessary elements that natural ponds have which allow the water to be clean and you must make up for that with adequate filtration.

There are two types of filtration necessary for your pond. Biological filtration and mechanical filtration. Biological filtration provides your Koi pond with a bed of bacteria that helps to break down decaying fish food and waste as well as other organic matter that can pollute your pond. Mechanical filtration removes debris from the pond. You can get filters that perform both tasks and some even have an Ultra violet light to help control algae.

When shopping for Koi pond filters, you want to stick to ones that sit outside the pond. These will be easier to maintain. You also want to get one that is appropriate for the size of your pond. The water should be filtered at about ½ the ponds volume per hour so you need to know how much water is in the pond and by a filter that will work accordingly.

There are many different filters available and your best bet is to check with your local garden store that specializes in Koi ponds. You can also read some Koi publications to find out which are more highly recommended. Most commercially bought units have a series of chambers for filtration. Some take a certain type of filter media and you’ll need to read the instructions to see if this needs to be replaced periodically as well as how to clean out the debris from the filter.

Choosing from the many varieties of Koi pond filters can be a daunting task, but it is an important one so you should take your time to be sure that you buy the one that is correct for your pond. Having clean water is imperative for the health of your fish as well as the beauty of your pond.