JUWEL Nitrax reduces nitrate levels in your aquarium, leading to a considerable reduction in algae growth. Nitrax is a biological filter on the containing specialist microorganisms to break down poisonous metabolites (ammonium/nitrite) in your aquarium, thus reducing the danger of fish mortality. Nitrax also reduces algae growth by anaerobically breaking down nitrate, thus supporting the vitality of your fish.
Size XL (previously known as Jumbo)
• Reduces nitrate
• Promotes plant growth
• Increases the vitality of your fish
• Purely biologically active