Bio Media made of Class C plastic is a perfect choice for sump owners who are looking for material that allows easy passage of water. These bio balls have a large surface area for beneficial bacteria to live.
- Size of filter media bag: 8 " x 5.5 ".
- Diameter of bio ball: 1".
- Each bag contains 50 pieces.
Remove cloth bag with rings inside from the plastic outside packaging.
Wash bags thoroughly prior to putting bio balls into any aquarium system.