Double Sponge Filter for Aquarium, Aquarium Sponge Filter with Water Pump, Biochemical Sponge Filter for Aquarium up to, with Sponge Filter Aquarium Sponge Filter Aquarium Air Filter for Biological a

sponge filter input: Press the sponge filter into the aquarium water for five minutes before using it for the first time. This promotes the colonization of beneficial bacterial colonies, which is important for biofiltration. Always use aquarium water instead of tap water Clean the sponge: Always use aquarium water when cleaning the sponge. Avoid rinsing the sponge with running water or hot water. Tap water usually contains chlorine and other chemicals that can kill beneficial bacteria. Gently squeeze the sponge several times until the water flows clearly, then gently clean the sponge. When should you change the sponge? It is recommended to change the sponge every months. However, it also depends on the size of the aquarium and the number of fish. When replacing a sponge, first let the new sponge soak in the aquarium for a few days to promote bacterial sedimentation. Specifications: Material: plastic + sponge. Colour: black. Package contents: Sponge Filter Set of Replacement Sponges Mode d emploi It is recommended to replace sponges every months