Filters & Maintenance Home / Indoor Aquatics / Oase / Biorb Aquariums & Decor / Filters & Maintenance / Biorb Airstone Biorb Airstone Biorb Airstone £2.49 The air stone at the base of the aquarium breaks up the flow of air into the aquarium into a mass of bubbles. You Will Earn 2 points with this purchase Add to your Wish List Description The air stone at the base of the aquarium breaks up the flow of air into the aquarium into a mass of bubbles. After a time the air stone can become blocked by calcification, especially in hard water areas, reducing the flow of air into the aquarium. Replacing the air stone every month will keep your aquarium bubbling away nicely. In some hardwater areas it may be necessary to replace the airstone more frequently but once every couple of months should be sufficient for most owners. Replacing the airstone is extremely easy. The airstone is location in the center of the aquarium under the filter cartridge, simply remove the filter cartridge and you will be able to locate the airstone. A replacement airstone can simply be pushed into place. Reviews Customer reviews No reviews left yet Write a review Most RecentTop Rated No reviews have been left for this product, be the first to leave a review Attributes Brand: Biorb Product Code: 822728000243 Weight: 0.01kg