About This

• REPLACEMENT FILTER CARTRIDGE: Keeps aquarium water clear – removes odors and discoloration and helps reduce buildup on aquarium glass.
• STAY CLEAN TECHNOLOGY: By maintaining healthy pH levels, creates easier maintenance for healthier fish.
• FITS TETRA WHISPER AQUARIUM FILTERS: Color coded to make it simple to remember which cartridge size to purchase.
• CONVENIENT: Pre-assembled, ready to use and easy to replace.
• USAGE: Change monthly or sooner if needed.