Airstone Cylinder 5cm

The 5cm cylindrical airstone is a time-tested staple of aquarium aeration, producing a consistent column of fine bubbles when connected to any standard air pump via 4/6mm airline tubing. Made from compressed mineral particles, it breaks airflow into small bubbles that maximise gas exchange at the water surface. Suitable for tanks of any size as a supplemental oxygen source or decorative feature within ornaments and bubble-wall setups. Airstones degrade over time and should be replaced every few months, or when bubble output becomes uneven. Sold individually; bulk packs available.