About This

• REPLACEMENT CARBON FILTER: Keeps aquarium water crystal clear – removes odors and discoloration.
• CATCHES DEBRIS: Dense, dual-sided mesh filters debris and fish waste.
• FITS TETRA WHISPER WATER FILTERS: Color coded to make it simple to remember which replacement cartridge size to purchase.
• CONVENIENT: Replacement filter cartridges are fully assembled and ready to use.
• USAGE: Change monthly or sooner if needed.
• Keeps water crystal clear
• Removes odors and discoloration
• Easy to use
• Two small, disposable filter cartridges
• Fits Whisper In-tank 3i
• It is recommended that you replace your Whisper Bio-Bag when water begins to overflow excessively from the Wonder Tube chamber, or once per month.