Filter media for removing phosphate from aquarium water.

Main Features:
• Phosphate removal from aquariums: Filter media for use in aquarium filters.
• Usage: Fill the filter media in a universal bag and place it in the aquarium.
• Insoluble iron compound; no substances are released into the water.
• For use in freshwater and saltwater: 340 grams for permanent stabilization of 18,000 mg of phosphate.