ITEM NAME:10x Cylinder Aquarium Purification Air Stone Fish Tank Aeration Aerator wer Descriptio n Description: Main Material :Arenaceous, Plastic Color:Blue Suitable for:Fish Tank, Aquarium Stone diameterï ¼Å¡14 MM Total height 50MM Features: Bubble stone Commonly known as diffuser stone (Sha Tau), a durable, good aeration, filtration, and widely used:A sewage treatment plant for aeration and Stirring to prevent large particles of sediment deposition, and removal of some organic matter. Aquarium (fish farms) eutrophic water body increase oxygen into the environment, bio-farming increase oxygen Live fish and seafood transport increase oxygen. Aquarium (purifiers) purification, filtration and water quality ozone sterilization and aeration. Other required air diffusion process uses. Package included: 10Pcs Air Stone Note: 1.As different computers display colors differently, the color of the actual item may vary slightly from the above images. 2.Please allow 1-3 CM differs due to manual measurement. Thanks for your understanding. Air Stone.Aquarium (purifiers) purification, filtration and water quality ozone sterilization and aeration. Live fish and seafood transport increase oxygen. Suitable for:Fish Tank, Aquarium. 10Pcs Air Stone. We want to make sure you are happy with our item.