Petzlifeworld Aquarium Filtration Big Size Cotton 1 Full Sheet L : 96Cm, W : 30Cm, H: 6Cm Aquarium Filter Cartridge  (35, Pack of 1)

Filter Material effectively removes particulate matter mechanically. Durable foam filters Traps particles & debris Facilitates effective biological filtration - It also allows thriving populations of beneficial bacteria to aid in the establishment and maintenance of the biological balance in the aquarium. - This product can be used for sea water tank, fresh water tank, with the sizes being cut as your wish. - The filter cotton has the best effect on decomposing the excrement and the forage leftover, and improving the filtering and cleaning of water, it can reduce the death rate of fish. - Being cleaned with water twice per month , without blocking and deforming, it can be used again after cleaning and can be repeated for use.