Need bubbles, than check out the Biorb and Biube Air Stones.
Product Description:
Keeps your bubbles bubbling!
The air stone at the base of the aquarium breaks up the flow of air into a mass of bubbles. After a time this can be become blocked by calcification, especially in hard water areas, reducing the flow of air into the aquarium. Replacing the air stone every few months will keep your aquarium bubbling away nicely. The pack has two air stones.
