Whisper 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.
Carbon packs are easily changed once a month. The Whisper Filter Cartridge large multi-packs come unassembled and offers economical pricing on larger quantities.
It is recommended that you replace your Whisper Filter Cartridge when water begins to overflow excessively from the Wonder Tube chamber.