Patented dual-sided dense-floss cartridges contain over 25% more activated carbon than the leading brands. These unique cartridges were designed to ensure even distribution of carbon throughout for more thorough filtration and longer cartridge life.
- Fits Aqueon QuietFlow Filter: LED PRO Size 20 and up and E Internal 40 gallon
- Ready-to-use cartridge contains high quality activated carbon that keeps water clean
- Installs in seconds: align cartridge bottom key slot for an accurate fit inside the filter
- For optimal performance, change approximately every 4 to 6 weeks
- Do not clean Bioholster when replacing the cartridge as it contains beneficial biological bacteria
- Rinse before use