Feature:1. TRAP PARTICLES AND DEBRIS: Aquarium filter sponge helps trap particles and debris in the water, extending the life of the filter media and is suitable for both freshwater and saltwater environments.2. PROVIDE EFFICIENT WATER FLOW: Fish tank filter sponges provide efficient water flow and reduce clogging for long lasting filtration, suitable for various aquarium environments.3. EFFECTIVE FILTRATION: Aquarium filter foam sponge rolls are made of sponge for effective filtration, safe and non toxic, and do not affect the quality of water PH.4. SAFE: Aquarium filter foam sponge provides a safe environment for young fish and shrimp to maintain a clear tank without worrying about being inhaled.5. FILTER ACCESSORIES: Fish tank filter foam sponge is light weight, high strength, high dirt absorbing capacity, durable and a must have accessory for fish tank filters.Specification:Item Type: Aquarium Filter SpongeMaterial: SpongeUse: Filter Accessories Filter CottonSize: Approx. 76x70mm / 3.0x2.8in.Package List:3 xAquarium Filter SpongeNote:Please allow some error due to manual measurement.