After reading your first post I spent some time researching the matter.
From what I've found, the general consensus seemed to be that airstones are one of the poorest forms of gas exchange as the surface area of the tiny bubbles are so small.
__________________
Adam
 90 gal reef, 30 gal sump, Tunze 9015 skimmer, 2 X Tunze Turbelle Stream 6125, Coralife Aqualight Pro 2x 250 w DE & 2x 96 w PC, 9 w Turbotwist UV sterilizer, 2LF phosban & GFO reactors
|