$12.99 (as of 28/09/2018 20:07 PDT details )
Features:
- Includes 2 1lb activated carbon in mesh media bags, 80 pieces of 20mm bio balls and 2 1lb ceramic rings in mesh media bag
- Removes and improves water clarity, color and odor
- Porous ceramic rings provide ideal growing site for beneficial bacteria
- Bio balls promote gas exchange and increase dissolved oxygen levels