Round Air Stones – 20 to 50mm


or 6 weekly interest free payments of NZD $0.58 with


Round Air Stone

These Round Air Stones are ideal for adding bubble features to any aquarium. Simply connect the air stone to your airline tubing and place it in the desired location. Improves oxygen content and circulation vital for healthy aquarium conditions.  The 20mm air stone is sold in pairs while 30mm, 40mm and 50mm are sold as singles.

Key Benefits:

The air stone diffuses air to accelerate oxygen replenishment
Helps release carbon dioxide build-up
As the bubbles rise they create water movement
Increases surface agitation
Spherical shape.


Air Stone Size (diameter): 20mm, 30mm, 40mm, 50mm
Fitting: Plastic Barb
Tube size: 4mm ID

Package Options:

  • 20mm – 2 x air stones
  • 30mm – 1 x air stones
  • 40mm – 1 x stones
  • 50mm – 1 x stones

Additional information


1 x 30mm, 1 x 40mm, 1 x 50mm, 2 x 20mm, 20mm, 30mm, 40mm, 50mm