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Fits with 4mm airline tube and is to be used wherever air is introduced into an aquarium for oxygenating purposes.
The air which is fed through the airstone exits in the form of a tower of bubbles - this process increases the water/air contact area and therefore improves the oxygenation of the water.
Made from safe and non-toxic material.
Supa have been involved in the aquatic trade since 1949, so have built up over many years a vast knowledge & experience of all that is essential for successful fish keeping.