Tetra Whisper Carbon Filter Cartridges complete the Whisper Power Filter package for a clean, easy-to-maintain aquarium. The included ready-to-use disposable single packs of ultra-activated carbon remove waste particles, odors and discoloration.
Whisper Filter Cartridge multi-packs come unassembled and offer economical pricing on larger quantities. Carbon packs are easily changed once a month. It is recommended that you replace your Whisper Filter Cartridge when water begins to overflow excessively from the Wonder Tube chamber.