ALEGI Media Filter Bag Aquarium Extra Fine,Reusable 180 Micron Drawstring Mesh Filter Bags for Very Fine Resins Filter (7.5"*3.6" (6 Pack))

Size: 7.5″ * 3.6″,180 microns fine mesh drawstring filter bags, Suitable for 100ml Purigen or other fine filter media. Specially designed for extra-fine filter media, such as Purigen, CupriSorb and activated carbon. Seal the bag securely. Our customized drawstring bag is tightly sealed to prevent loose media from potentially damaging the pump or the filter media being inadvertently eaten by the fish and harming the fish. The sturdy construction and heavy-duty stitching make these fine filter media bags strong and durable, so they can be washed and reused many times. Nylon mesh filter media bag, with no peculiar smell, are not affected by bleach, caustic or acid, and do not contain metal that may easily rust and pollute water, completely safe for fish.