Tetra Whisper Ex Carbon Filter Cartridge Aquarium Filter Insert – Medium – 4 Pack Fashion

Tetra Whisper Ex Carbon Filter Cartridge Aquarium Filter Insert – Medium – 4 Pack

• Unique cartridge design: round modern design continuous flush performance improved biological filtration.

• Improved flow rates and multi-density floss.

• Timestrip cartridge change indicators included.

• 4 cartridges per pack fits whisper ex20.