Aqua One Airstone 2 Inch 5cm

Kongs

$7.99 

Aqua One's range of Airstones is available in various shapes and sizes. They turn the air from an Aqua One Air Pump into fine air bubbles to assist in maximising the oxygen level in your aquarium by moving water to the surface.

https://www.youtube.com/watch?v=QQJsr8fc53w