Replace the Broken Sponge: Helping the fish tank, aquarium, and water tank cleaner, Water Filter Foam Sponge is a good replacement for the old filter sponge or foam, providing filtration with new power. Easy Application for Filter: Convenient and simple to apply, Aquarium Sponge Filter Replacement is practical to take effect in the process of filtration, replacing the sponge in the filter. Effective Filtration: Powerful to trap most visible debris particles, Filter Sponge Replacement is effective for sewage suction and water purifying, keeping your water . Provide Efficient Water Flow: Fish Tank Filter Sponge Replacement is useful to provide the fish tank with efficient water flow, reducing blocking and clogging, and is practical to realize long-lasting filtration for water. Washable and Reusable: Saving your effort and money to use, Foam Filter Replacement is easy to clean because it is washable and reusable for filtering again and again. Colour:black+blue Material:sponge Package Contents: 2 x black filter 1 x blue filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.