You have purchased a 420g high-quality multi-filter material in a bag. Our filter ring is ideal for aquarium and pond filters. These filter rings come in a mesh bag and are easy to put in the filter to clean. They can also be removed from the bag and placed in the filter. The large surface area allows beneficial bacteria to multiply and biologically filters the water, removing ammonium and nitrites. Supplied Quantity : 1 bag of 420 g
