Brand XINYOU Model XJ-180 Quantity 1 piece(s) per pack Color Black+Write Material Cotton + Plastic Suitable Pet Fish Specification Super Biochemical Sponge Filter Suitable for aquarium within 180L Other Features Before use soak the Bio-foam in aquarium water for 5 mins; During maintenancealways rinse the Bio-Foam with drained out aquarium water only. No tap water or hot water should be used at all; When re-using the Bio-Foamdo squeeze the foam in the water to remove all trapped air bubbles.This will keep the filter stay submerged; Suggest replacing the bio-foam every 6 months to ensure the filtering effect as well as the growth of the nitrifying bacteria. Packing List 1 x Sponge Filter 1 x Plastic Tube