AquaClear 70 Activated Carbon Filter Insert improves water clarity in fresh and saltwater aquariums. Exclusively designed for the AquaClear 70 Power Filter, it provides superior adsorption qualities which eliminate odors, discoloration and impurities. 3-pack.Net Weight: 420 g (14.8 oz) Other size available: -A617 AquaClear 70 Activated Carbon Filter Insert, Single Pack, 140 g (4.9 oz),