This round air stone disc is designed to create ultra-fine micro bubbles, enhancing oxygenation in your fish tank or aquarium. Its sleek and durable design ensures quiet operation, making it ideal for maintaining a peaceful aquatic environment. for promoting healthy fish and plant in your . Features -Color:White -Material:ABS/ stainless steel/sandstone -Size:6.20X5.60X3.40cm/2.44X2.20X1.34in -Quiet operation: designed for silent performance, this air stone ensures a peaceful viewing experience, making it for nighttime use without disturbing your rest. -Micronlevel bubbles: the micronlevel bubble disc evenly distributes oxygen, enhancing the oxygen content in the water and promoting the healthy growth of your fish. -Efficient atomization: advanced atomization technology increases the surface area for oxygen exchange, effectively preventing the of aquarium water quality. -Versatile use: suitable for all types of aquariums, whether freshwater or saltwater, providing a stable supply of oxygen in any environment. -Durable design: built to last, this air stone is resistant to damage from longterm use, reducing the frequency of replacements and making it easy to maintain your aquarium's ecological balance Package list: 4 x Air Stone Disc