Fluval Nitrite Remover Foam Insert Block

Fluval Nitrite Remover Foam Insert Block

• Chemical filter media
• Removes harmful nitrite
• Ideal for new, heavily stocked and dirty aquariums
• For best results, replace monthly or as required after testing water with your Fluval test kits
• Designed specifically for the Fluval Flex, Spec and Evo aquarium series
• Convenient 4 x Duo-Pack format