This AquaClear 110 Filter Media Replacement bundle includes one 3-pack of AquaClear 110 Activated Carbon Inserts and one 3-pack of AquaClear 110 Foam Filter Inserts. AquaClear 110 Activated Carbon Filter Insert improves water clarity in fresh and saltwater aquariums. Exclusively designed for the AquaClear 110 Power Filter, it provides superior adsorption qualities, which eliminate odors, discoloration and impurities. AquaClear 110 Foam Filter Insert is a mechanical filter media that effectively removes particles and debris from aquarium water. It also prevents particulate waste from prematurely clogging other media in the filter. Primarily a mechanical filtration media, it also provides powerful biological filtration as friendly bacteria eventually grow inside its pore structure. Exclusively designed for the AquaClear 110 Power Filter, the Foam Inserts are safe for fresh and saltwater aquariums. AquaClear creates a wide variety of products for freshwater tanks such as fish tank accessories, fish tank decorations, and aquarium filter media that is perfect for large and small fish tanks.