About This

• Ready-to-use filter media for fresh and saltwater. The size of the ball: 1 inch in diameter. The size of the bag: 8"x 5.5".
• Unique design with bio sponge inside, it provides a multifaceted area to increase biological loads. Our bio balls are 100% polypropylene making them a safe reliable bio filter media for fresh and saltwater.
• Easy to maintain. In the event of excessive buildup, you may gently rinse with water from an established aquarium, if desired.
• Includes: 250 balls in 5 mesh bags. 50 pcs each.