This Nitrite Remover pad is specifically desgined for the FX filters, and are effective at removing and reducing nitrite. They effectively trap floating particles for clear water (debris, excess food, and waste), which helps prevent fish loss within your tank. It also helps to support beneficial bacteria for a healthier aquatic environment.
These are a custom fit for the FX Series filters, to increase filtration efficiency. For best results, replace monthly or as required after testing water with your Fluval test kit. They come in a convenient 3-pack format, and can be used in both freshwater and saltwater aquariums.