Geiserailie 4 Pcs Aquarium Filter Media Bags 150 Micrometer Fine Filter Bags Mesh Reusable with Zipper for Activated Carbon Resins (3.1 x 7.9 Inch)

["Fine Filter Bag Aquarium: the package contains 4 pieces aquarium filter media bags in white color, with 100 mesh, applied for fine resins filter and activated carbon for fresh or saltwater tanks","Fine Mesh: the fine aquarium filter bags adopt 100-mesh fine mesh design, and the carbon bags mesh diameter is about 150 micrometer, which is suitable for most fish tank filter materials without spilling","Zipper Pockets: the fine mesh aquarium bags are designed with a zipper closure at the opening, which is compared with the traditional drawstring design, the zipper seal not only makes it convenient to replace the filter material, but also ensures that the filter material does not spill out","Appropriate Size: the aquarium media bags fine mesh has a moderate size, which is a suitable model for most aquarium fish tanks; You can fill the appropriate amount of filter material according to the actual situation","Improve Water Quality: the aquarium filter bag zipper can provide your fish tank with a good experience, it plays an important role in purifying the water stains, and giving your pets a good living space"]