DescriptionThis fish tank Air Stone Bubbler is made of high gradematerial for durable and long-lasting use. Designed to add oxygen toyour hydroponic growing system, fish tank and aquarium. This fish tankAir Stone is suitable for hydroponic systems, ponds, aquariums, fishtanks and other systems. Transparent visual material, you can clearly see the capacity . High grade plastic material, can be used for a long time .Features- Color: As Shown -Material:Plastic - Size: 7.00X3.50X3.50cm/2.75X1.38X1.38in-The Air Stone release air bubbles smaller, denser, more uniform, help fish swim happily in aquarium, fish tank. -Easily produce fine bubbles that help to increase oxygen levels and circulate nutrition, useful and simple. -Small and compact size, portable and lightweight, easy to use, not take up too much space. -Extend the life of your nutrient solution, help keep fish healthy, and promote hydroponic plant growth. -Air Stone is perfect and wonderful for freshwater, saltwater aquariums, hydroponic, or fish tanks.