The Fluval A1504 can be used in the following applications:
The Fluval Lab Series Aquarium Opti-Carb - 175 gram is designed for use in freshwater and saltwater aquariums. The Fluval Opti-Carb can be used as filter media or to specifically remove toxic metals and organic compounds in water. This aquarium additive absorbs dissolved proteins and organic substances and can treat up to 50 gallons of water.
Fluval Lab Series Aquarium Opti-Carb - 175 gram specifications: