Pack of 10 aquarium filter bags with zipper - Reusable bags with activated carbon and biosphere - Black

【Thoughtful Design】The plastic zipper is safer for the filter media, reusable, and ideal for long-term use, unlike metal zippers which can easily rust and pollute your water. Optimize your filter to meet the needs of your aquarium or pond and the fish and livestock you keep. 【Size】The aquarium filter bag measures 20 x 15 cm and the mesh hole diameter is approximately 1 mm. The ultra-fine mesh design is perfect for use with activated carbon, peat fiber, granules, bio-balls, zeolite, pellets, gravel, ceramic rings, ammonia, or other aquarium filter media. 【Cultivate an Eco-Friendly Aquatic Environment】Place the extra-fine zippered mesh bags filled with your choice of media into the running water. Helps create a quality living environment for your pet. Purified water quality, rapid probiotic growth, restoring a high-quality water source found in nature. Your fish farm needs a good water source and proper management. 【Package Contents】 The package comes with 10 filter bags. The bags can be tightened to prevent loose media from potentially damaging your water pump or electric filter motor, allowing you to easily fill or empty them.