Aquarium Biochemical Filter Sponge, Cuttable, Resilient

This dense filter sponge combines mechanical and biological filtration, efficiently removing waste and debris while supporting beneficial bacteria growth for clear water. Made from high-quality polyester fiber, it is soft, durable, and resists deformation. Washable and reusable for long-lasting use. Easily cut to fit various filter systems such as top, canister, and waterfall filters. Safe, odorless, and free from harmful substances, ensuring the safety of your aquatic pets. Available in different pore sizes for both freshwater and saltwater tanks, helping reduce water changes.