DEPEPE 10pcs Aquarium Filter Media Bags with Zipper for Activated Carbon, Biospheres, Ceramic Rings

Filter made of: Polyester: Zipper made of: Plastic, Package contains: 5 white filter bags and 5 black filter bags, Filter bag size: 15cm x 20cm/5.9" x 7.8", Mesh hole diameter: Approx. 1mm, suitable for respiratory biological rings, activated carbon, volcanic rocks, coral sands, ceramic rings, etc. not suitable for finer particles., Filter bags are good for various filters, including fresh water tanks, tank filters, power filters, etc.