Ceramic Air Stones
Porous air stone of alumina silicate with stainless steel inlet bolt produces a controlled stream of fine bubbles. Corrosion-free for use in fresh or saline water.
Ideal for fish farming/transportation and waste water treatments. 
Dome size: 7" x 1.5" Inlet size 9mm
Flow rates: 0.5 to 2 cfm / 0.85 to 3.4 m3/hr 
Not suitable for pure oxygen.
The air stones are also available with