Aquatop Aquarium Carbon Cartridge for PF40-UV Hang On UV Filter - 9 Total Filters -3 packs with 3 per pack-

AQUATOP RCI-PF40 carbon insert replacement for PF40-UV Power Filter. Insert is filled with AQUATOP's own high quality Carbon for maximum effectiveness. Outer layer is made of a strong poly fiber to mechanically filter out large dirt and debris. Extremely easy to use and install. Compatible with PFE9 Hang-on Filter.Simply lift the PF40-UV's lid to expose carbon insert.Remove old carbon insert by lifting straight up from unit and replace with new insert.Fill the PF40-UV with aquarium water and close lid.