JBL Blue filter foam fine pore 50x50x5cm, Fine foam for filters to combat all kinds of water cloudiness

Quick elimination of all kinds of cloudiness in freshwater and marine water aquariums and in pond water: reusable foam for use in the filter Easy to use: cut the foam to the size you need (suitable for all filters). Layer as filter stage for pre- and long-term filtering Crystal-clear water: filters off floating algae and cloudiness. Offers a large surface for the settling of cleansing bacteria No release of harmful substances - water neutral fine foam with 30 ppi pore size Contents: 1 washable foam filter mat for aquariums (50x50 cm) for all types of filter; available in 2.5 cm, 5 cm and 10 cm thickness