QTY: 2PCS Replacement Filter Cartridges with Activated Carbon
The NP-RFC cartridge comes pre-filled with AquaTops Activated Carbon, these replacement cartridges are extremely easy to use and install and helps keep aquarium water crystal clear and free from odor. NOTE: AquaTop recommends replacing the Filter Insert filled with Activated Carbon every 4-6 weeks. Aquariums with heavier livestock loads may require more frequent replacement.
2 PCS in one bag