Aquarium Bio Balls Ceramic Rings Set 10 in 1 Activated Carbon Biological Filter Media for Fish Tank

Feature: 1. Aquarium filter media set combines with a variety of filter materials, scientific and effective mixing ratio, makes fish tank filter works better. 2. Biological filter can filter and purify water in all directions, improve the quality of aquarium water, eliminate impurities. 3. It provides nice home for beneficial bacteria, encourages growth of biological colonies, which will create a suitable living environment for your fishes. 4. Bio balls ceramic rings media works for any freshwater or saltwater fish tank or mini reef aquarium. 5. Super filtration, good results, the filter material maintains the health of the water body by adsorbing dirt, germs, moss and other impurities. Specification: Item Type: Fish Tank Filter Media Material: Sand + Gravel + Soil Mixture Weight: Approx. 500g / 17.6oz. Package List: 1 Bag x Filter Material (500g)1 x Mesh Bag Note: 1. One pack is 500g /17.6oz. Because of the filter material, the actual weight is subject to receipt, with a difference of 10?20g / 0.4?0.7oz. 2. The filter material must be cleaned first.