Designed specifically for the Fluval FX (FX4, FX5, FX6) high performance canister filter series, Nitrite Resin infused Pads perform double duty as both an effective mechanical and chemical media.

-Specifically designed for the FX filters
-Effective at removing and reducing nitrite
-Effectively traps floating particles for clear water (debris, excess food, and waste)
-Helps prevent fish loss
-Supports beneficial bacteria for a healthier aquatic environment
-Custom fit to increase filtration efficiency
-For best results, replace monthly or as required after testing water with your Fluval test kit
-Convenient 3-pack format
-For use in freshwater and saltwater aquariums