Ok with out flames intended Bob, elplain to me the difference between a gas to water layer, and a water to gas layer?
at both points you have difusion going on between the air and water.. the advantage with the bubbles is that it is moving thus exposing its surface to new unsaturated water at all times.. with the water surface at the tank with out agatation it becomes saturated and stops.. with agatation you are breaking up the saturated level and exposing water with lower O2 levels to the air.. same thing that is happening in bubbles by virtue of them raising..
if you want another thing to think about look at how a skimmer works.. it makes a lot of bubbles throught which with the aid of a long contact time with the water, organics and other stuff are pulled into the layer around the bubbles. also at the same time O2 is being adsorbed into the water. because the level of air to water is very high in a skimmer (some aproching 50% or higher) it is like taking a blender and agatating the surface of your tank.
I don't mean to sound like a broken record but some of the stuff WE used to think was pretty silly.. why did we beleive it.. because some one sait it was true and it worked for them.. (mind you most of them made rediculous clames because they were getting paid for endorsing products.. which we never knew back then either.. )
Steve
__________________
 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*
Some strive to be perfect.... I just strive.
|