_x005F_x005F_x005F_x000D__x005F_x005F_x005F_x000D_The filter bag can be used for various media, such as phosphate removers, nitrate removers, carbon and ammonia remover. It prevents filter mediums from spreading and is made of heavy nylon for better water flow. It is great for bio-balls, activated carbon, ceramic and ammonia remover._x005F_x005F_x005F_x000D__x005F_x005F_x005F_x000D_Features_x005F_x005F_x005F_x000D__x005F_x005F_x005F_x000D_- Brand: UKCOCO._x005F_x005F_x005F_x000D_- Color: White and black. _x005F_x005F_x005F_x000D_- Material: Nylon. _x005F_x005F_x005F_x000D_- Size: Approx. 15 x 20 cm/6 x 7.8 inch._x005F_x005F_x005F_x000D_- Our mesh media bags fit perfectly in a variety of filters including canister filters, power filters, sumps, wet/dry filters and pond filters._x005F_x005F_x005F_x000D_- These unique mesh filter bags are easy to fill and empty with drawstring design to keep filter media secure._x005F_x005F_x005F_x000D_- Our nylon bags are durable, washable, and can be reused._x005F_x005F_x005F_x000D_- The mesh bags optimal hole size allows water to freely flow around and throughout the media. I_x005F_x005F_x005F_x000D_- The bag is completely safe for both fresh and saltwater aquariums.Packing list:5 x UKCOCO Black Filter Mesh Bag_x005F_x005F_x005F_x000D_5 x UKCOCO White Filter Mesh Bag