Matala “progressive” filter media is actually the first filter media truly designed and intended to be used in koi pond filtration. For over 20 years Matala pond products have grown and gained recognition as high quality and efficient equipment for use in koi ponds, water gardens and water features. You can rely on Matala pond products to improve filtration, clarity, aeration and fish and plant health in your dream pond. Designed and engineered by a dedicated and innovative team of professionals; distributed and sold by pond experts around the world.