Pond Filter Wool Coarse Blue 100 g

Filter wool with a coarse structure for the first dirt catch. Excllent for biological filrafion. Made from first quality nylon fibre, which is very elastic ard has a long lifehime. Universal filter wool with o lorge dirt catch ond filter capacity. Its water permeability is large and the wool can be rinsed often. Tip: The activity of filter wool will decrease after one season. It is recommended to replace them in spring.