Installs in seconds: align the lower key slot of the cartridge for an accurate fit in the filter
For optimal performance approx. Change every 4 to 6 weeks
Fits Aqueon QuietFlow filters: LED PRO size 20 and above and E internal 40 gallons
International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.