Lees Quick & Easy Disposable Aquarium Filter Cartridges: Large
Lees Quick & Easy Disposable Aquarium Filter Cartridges: Large #13436 Lees Dual Pocket Disposable Aquarium Filter Cartridge with dacron floss, activated carbon (removes organic matter that may cause an odor in the aquarium), and zeolite (removes harmful ammonia). Since water naturally flows through the area of least resistance, the Dual Pocket feature forces water to penetrate through the carbon and zeolite providing the most efficient filtration. FITS Lee's Quick & Easy Corner Cartridge Filter and Penn Plax's Clear Free and Clear Free II. - Aquarium Filter Cartridges
