General description AlwaysH Aquarium Filter Sponge is designed for effective filtration in aquariums and ponds. This thickened biochemical filter pad enhances water quality by reducing residue, lowering fish mortality, and increasing oxygen solubility. Its multi-layer filtration system ensures crystal clear water by capturing fine particles. Technical specifications Length: 2 meters Material: Soft and elastic fabric Filtration layers: Three layers (basic filtration, filtration, fine filtration) Durability: Usable for up to six months with repeated cleaning Usage Suitable for seawater tanks, freshwater tanks, and aquatic plant tanks Effectively filters uneaten food, waste, rotting plants, and dirt Reusable after washing