This air stone can produce fine bubbles for oxygen replacement and lowering CO2 levels.
If the depth of water over 40cm, please add the power of the air pump.
Total Size: 106 x 20mm/4.17" x 0.79"(D*H); Fits for tube of 5mm/0.2" inner diameter.
Soak the stone completely in water over 2 hour before use.Clean regularly by a brush as they get clogged.
When all the parts of the air pump are well connected,repeatedly plug and unplug the tube of the back door of the fine-tuning valve to add water to the tube to quickly achieve the atomization effect.
