The yellow ZooBest Magic Clear filter fleece mat is specially designed for use in any kind of aquariums, as well as sea water. ZooBest Magic Clear filter mat has shown amazing results in the field of aquarium filtration. Even if you think the water is clear, you will notice a difference just a few days after using the Magic Clear filter mat. Also ideal for any breeding or quarantine tank, as the water quality is greatly improved. The ZooBest Magic Clear filter fleece mat has a size of 65x40 cm and can be cut individually for use in internal and external filters. The filter fleece mat is washable and reusable several times.