Large size 50×50×2cm, filter mats can be cut to fit your filter for use in any aquarium or pond filter Sponge filters provide mechanical and biological filtration which captures large amounts of waste and is not easily clogged Pore size is measured by the number of pores in the area (PPI), and the higher the PPI, the more pores in the sponge ( fine).It is recommended to use a combination of sponges of different specifications for best results. Safe for aquatic animals and without dyes. Filter mats are commonly used as prefilters for wet/dry filters, collection tanks, and reservoir filters. Regular cleaning, reusable after cleaning, durable Vacuum sealed compression packaging, easy to store, does not take up space, suitable for all types of aquariums. (After unpacking, follow the instructions in the user manual, restore the size for use)
