Exclusively designed for the Fluval C4 Power Filter, Fluval C4 Ammonia Remover is ideal for new or heavily populated freshwater aquariums. It removes and controls harmful ammonia and nitrite, which reduces stress on fish as a result.
Key Features:

Exclusively designed for Fluval C4 Power Filter
Ideal for new or heavily populated freshwater aquariums
Removes and controls harmful ammonia and nitrite
Reduces stress on fish
3-pack
Net Weight: 870 g (30.68 oz)

Other sizes available:

14014 Fluval C2 Ammonia Remover, for Fluval C2 Power Filter
14015 Fluval C3 Ammonia Remover, for Fluval C3 Power Filter,