Pawfly 4 Pack Aquarium Filter Media Bags, Fish Tank Extra Fine Mesh Bag with Drawstring 150 Micron Aquarium Mesh Bag for Fine Resins, Activated Carbon, Bio Filter Balls, Ceramic Rings (8.5" x 3.2")

For Most Filter Media: Size: 8.5" L x 3.2" W. Work great for fine or large aquarium filter media, such as peat granules, purigen, fine activated carbon, bio balls, zeolite, ceramic rings, crushed coral, etc. Extra Fine Mesh Bag: Hole size: 0.15 mm. Nothing can pass through the net except water. Well-sewn with soft but strong nylon, the aquarium filter media bag is wear-resistant and reusable. Reliable to be used in freshwater and saltwater fish tanks Fit Multiple Filters: The aquarium filter media bag is suitable for diverse filters, such as canister filters, power filters, pond filtration systems, etc. Connect all the filter media together to keep your aquarium clean Practical Drawstring: Tightly seal the fish tank filter media bag with the handy drawstring. It always wraps the filter media inside without leaking out. Convenient to open or close the bag for easy replacement of materials Washable & Safe: The white mesh filter bag withstands regular washes. No more worries about water contamination.