Maximise the output of your air pump with these highly porous air stones.
With a maximum pore size of 140 microns, these stones create a rich curtain of bubbles, providing excellent aeration for your aquaponics system.
Made of 100% glass-bonded silica, these stones can be expected to last indefinitely in a clean system with pH levels of less than 8.0.
Dimensions – 19 mm x 19 mm x 38 mm long
Hose fitting – plastic barb, 4 mm diam.