DescriptionThis air refiner is an air stone, whose purpose is to gradually diffuse air into the tank and provide oxygen for fish to breathe, is a necessity to have around your house if you are a lover of aquatic animals. Just prepared for you.Features- Color: As Shown .- Material: Acrylic, ores. - Increasing air flow circulation to oxygenate water that is beneficial to pet fish.- A great way to add oxygen to your fish tank, aquarium, hydroponic and circulation system.- It is used to increase oxygen in the fish tank, a nice accessory for your fish tank.- The bubbles are uniform, small and dense, with good oxygenation effect.- Adopted of premium material, practical and durable with long service life.