JBL Blue filter foam coarse pore 50x50x2,5cm, Coarse foam for filters to combat all kinds of water cloudiness

Quick elimination of cloudiness in freshwater and saltwater aquariums and in ponds: reusable foam for the use in 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 all kinds of clouding. Provides very large surface for the settlement of cleansing bacteria No release of harmful substances - water neutral fine foam with 10 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