Air stone diameter: 10.5cm/4.1in, product diameter: 8.5cm/3.3in. Larger bubble area.
Creates a circle of nano bubbles that enhances your aquarium's visual appeal and helps keep the water oxygenated for healthier fish.
The base is also made of ceramic, heavy enough to sink to the bottom of the fish tank. Better than other plastic materials.
For water depth below 80cm/31in, the recommended air pump pressure is: 0.020-0.025Mpa (20-25Kpa). An air pump exceeding 0.2Mpa/200Kpa will cause damage to the air stone disc (will affect the air out).