Fluval C4 Bio Screen Pads:
Designed for use with the Fluval C4 Power Filter, the C4 Bio-Screen Pad provides an ideal biological surface area for beneficial bacteria to colonize upon.
- Biological filter media
- Evenly distributes water flow into the C-series Trickle Chamber for additional biological filtering
- Also effective at trapping debris
- Convenient 3-pack format
- 3 x bio-screen pads