Flat and round design: Maximizes the exit surface of the air stone to provide more surface area for bubbles. Made from high quality carborundum, it features strong gas permeability , even air bubbles and high dissolved oxygen. Benefits: Increases airflow/circulation to oxygenate the water and improve the health of aquatic life.< /p> Ornamental: Add beauty to your aquarium with this round air stone to create micro-bubbles. For continued effective use, clean the disc regularly.
