Multi-Layer Aquarium Biochemical Filter Sponge

High-density, multi-layer filter sponge designed to cultivate beneficial bacteria and maintain crystal-clear water in your aquarium. Its durable, porous structure effectively traps debris while promoting biological filtration. 15-layer thick foam provides extensive surface area for nitrifying bacteria colonization Promotes biological filtration by breaking down waste and ammonia naturally Soft, lightweight material with excellent water permeability to prevent clogging Durable construction suitab