GOLDEAL Bio Balls Ceramic Rings Set: The Ultimate Aquarium Biological Filter Media with Mesh Bag for Fish Tank and Pond - Premium Fish Tank Filter, Decorations & Accessories You Need! Review

【12 Filter Media】These include volcanic rocks, medical stone, zeolite, coral sand, nanometer bacterial rings, infrared bacterial rings, biological beads, bio ball, activated carbon, infrared microspheres, ceramic rings and red breathing rings. 【Easily Improve Water Quality】Placing filter material in fish tank and pond.The product can filter and purify water sources in an all-round way, improve the quality of aquarium water, resolve impurities, stabilize PH, clarify your water naturally and cultivate beneficial bacteria with these bio-balls.and create a good living environment for fish. 【Work as a biological filter media】:Aquarium bio filter is excellent interaction between air and water and gas exchange. The Bio-balls can give a nice home for beneficial bacteria where they can settle and be fed by water and oxygen. They will also promote gas exchange and increase dissolved oxygen levels. So as to form a good ecological cycle. 【Scientific configuration,Rational combination】The mixing ratio of various filtering materials in the product has been calculated.It can also be used in a variety of ways, which can not only solve the problem of fish tank water quality but also save you time. 【Suggestion & Refund Guarantee】The product contains natural ingredients. Please clean it before use.It's best to use water from a fish tank or chlorine-free water for cleaning. If you are not satisfied with the product, we will provide you with 100% refund service.