Composed of natural and synthetic ion-exchange resins in a convenient pouch. Selectively removes ammonia, nitrite and nitrate from freshwater aquariums. Completely rechargeable with Doc Wellfish's Aquarium Salt.

• A convenient filter cartridge for your Rena SmartFilter
• Natural and synthetic ion-exchange resins
• Selectively removes ammonia, nitrite, and nitrate from freshwater aquariums
• Reduces unhealthy ammonia surges while establishing the aquarium's ecosystem
• 7.4 ounce

A convenient filter cartridge for your Rena SmartFilterUnited States