About this item

• Fits Aqueon QuietFlow Filter: LED PRO Size 20 & up and E Internal 40 gallon
• Ready-to-use cartridge contains high quality activated carbon that keeps water clean, rinse before replacing
• 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