ratemyfishtank.com is a scientific paper?Opinions are like bellybuttons everyone has one. The exerpt I quoted is from a scientific paper.
Oxygen is actually far less soluble in water than CO2 and solubility in water has little to do with the size of molecules but the fact that CO2 is polar while oxygen is not.Air is made up of nitrogen, oxygen, co2 and lots of inert gases. The interchange of gases with water depends on the spaces between the water molecules so O2 will fit faster than the larger CO2 molecules.
Any increase in the surface interaction of water with air will result in an increase of oxygenation.