The chart in Post #4 is a suspect, without seeing the description and power of the equipment. The comparison won’t be fair unless they have the same power.
A major difference between the two is that air stone can strip off CO2 from rising bubbles and this is why planted tank folks avoid air stone operation during photo period but appreciate good circulation from circulation pump. When it comes to oxygenation, surface ripples and turnover of the water volume matters more than bubbling.
A major difference between the two is that air stone can strip off CO2 from rising bubbles and this is why planted tank folks avoid air stone operation during photo period but appreciate good circulation from circulation pump. When it comes to oxygenation, surface ripples and turnover of the water volume matters more than bubbling.