These are replacement filter mats for your koi pond skimmer filter. They are a standard 2" thick and made from a durable filter material. Check the sizes to match up to your current skimmer filter. The Aquascape skimmer filter replacement mat is the most common. We suggest replacing the filter pads in your pond skimmer filter once a season.
A healthy koi pond requires the removal of food particulates and waste. If this debris isn't removed, it promotes the growth of algae and other microorganisms that discolor the water and make it an unhealthy place for the fish. When your original pond filter mats become clogged and cannot be easily cleaned, it's time to get some pond replacement filters. We offer an assortment of pond filter foam replacements to replace your original filter that are an exact fit. These pond filter media pads are made from a durable fiber material designed to give you long-lasting filtration. When using pond filter pads replacements, we do recommend cleaning them two or three times a month and replacing them once a season. That will keep the water clean and give the koi a healthy pond.