This fish tank filter bag can be used repeatedly for biological filtration and water purification. The aquarium filter bag features high water permeability and anti-overflow design for effective filtration. Made of safe cotton material, this fish tank bottom filter bag has no impact on water quality. Fine fiber construction filters out impurities, maintaining fish environment. Easy to clean, machine washable, tear-resistant, and durable. Introducing our fish tank filter bag, the perfect solution for maintaining a clean and healthy aquatic environment for your fish. Our filter bag can be used repeatedly to provide biological filtration, absorb impurities and odors, and purify water quality. Its good water permeability and anti-overflow design ensure efficient filtration without any mess. Made of cotton, it does not affect water quality and is safe to use, while its fine fiber construction effectively filters out impurities in the water, protecting the living environment of your fish. The filter bag is easy to clean, machine washable, tear-resistant, and deformable, making it a durable and convenient choice for aquarium maintenance. Keep your fish happy and healthy with our fish tank filter bag. Item Name: Fish Tank Filter Bag Material: Cotton Features: Biological Filtration, Water Purification, Drawstring Size Details: L: 38cm, W: 19cm(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Fish Tank Filter Bag