Fluval® C2 Activated Carbon improves water clarity in fresh and saltwater aquariums. Exclusively designed for the Fluval C2 Power Filter, Fluval® C2 Activated Carbon provides superior adsorption qualities that effectively eliminate odors, discoloration and impurities. For Fluval C2 Power Filter improves water clarity in fresh and saltwater aquariums Provides superior adsorption qualities Effectively eliminate odors, discoloration and impurities Contains 3 bags, 45 g (1.6 oz) each Net Weight: 135 g (4.76 oz) Other available inserts for the C2 Power Filter: Fluval C2 Ammonia Remover 3 Pack Fluval C2 Bio-Screen Fluval C2 C-Nodes Fluval C2 Carbon 3 Pack Fluval C2 Foam Pad 2 Pack Fluval C2 Poly Foam Pad 3 Pack Fluval C2 Zeo-Carb 3 Pack Fluval C2 Replacement PiecesBFA# HA14011