Honritone 5Pack Nylon Mesh Filter Socks 4 Inch Ring 50/75 / 100/200 / 300/400 Micron - by 14 Inch Long - Aquarium Filter Bags (400 Micron 4" x 14" Nylon Mesh Bag)

High Quality - This filter sock is made from high quality nylon,strong, durable mesh screen, and then use heavy stitching to make durable filter bags. Easy to clean and reuse - our heavy mesh filter socks are cleaned and reused many times. Perfect for using on your return pipe in your sump tank, will also hold media such as activated carbon. Removes excess food, detritus, organic wastes, and other particulates to lower ammonia levels and other undesirable substances. Suitable for use with aquariums. The ring contains a handle for easy removal and cleaning.