Tetra - Whisper Filter Cartridge Medium 4 Pack
Tetra’s New EX Filter Cartridges provide both mechanical and chemical cleaning of your aquarium’s water. Includes new Timestrip Technology.
- Improved biological performance with Multi-Density Floss
- Continuous flush performance
- Round, modern design
- Replacement cartridge for Whisper EX20 Power Filter
- New Timestrips included with each filter cartridge