1.25" Biochemical Bio Balls Filter Media in Mesh Bag for Aquarium Fish Pond Waterfall Fountain (600 PCS (2 Bags))

Bio ball diameter: 1.25" 300 balls in a free mesh bag 17"x13"; easy to clean Good to use in different type of filters, and good for both fresh and saltwater tanks. The zipper of the mesh bag is made of plastic. Flat dimensions (with balls): 15"x 12"x 3.3" Package includes: 2 bags of 300 bio balls, 600 pcs in total.