Aquatop Carbon Cartridge Replacement Inserts are made of strong poly-fiber material and filled with Aquatop premium activated carbon to collect and remove organic debris in your aquarium. They are extremely easy to install, remove and clean, and help keep water crystal clear and odor-free.
These carbon filter cartridges are designed to fit Aquatop Submersible UV Aquarium Filters SP9-UV and SP13-UV
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.