Introducing the MMT Filter Media Bag, a premium solution for your aquarium filtration needs. This pack includes 3 durable woven mesh bags measuring 16cm x 11cm, perfect for containing various filter media. The 0.8mm fine mesh netting ensures excellent water flow while preventing media escape. Each bag can hold up to 200g of filter media, making them ideal for activated carbon, bio balls, ceramic rings, zeolite, and other filtration materials. These versatile bags are suitable for both marine and freshwater aquariums. The thoughtful design features an aquarium-safe drawstring cord closure system instead of metal zippers, eliminating any risk of rust or chemical leaching. The bags are completely reusable and washable, offering long-lasting performance. The robust construction ensures they maintain their integrity even with regular use and cleaning. Whether you're setting up a new aquarium or upgrading your existing filtration system, these filter media bags provide a reliable solution for maintaining crystal-clear water and optimal filtration efficiency.