Originally Posted by Hoppy
CO2 dissolves very easily into water, but O2 is hard to get dissolved into water, and water holds a lot less O2 than CO2. Bubbling air through the water isn't an effective way to get more O2 dissolved. A wet/dry filter is a very effective way to do that, and those can be relatively cheap, for example http://www.amazon.com/Hagen-14003-Fl...r+for+aquarium
Thanks for the reply. I concur that its harder to get the O2 to dissolve into the water. I don't intend to do the standard air stone in the tank method. Do u not think bubbling the air into a Rex style reactor would increase the amount of air O2 dissolved into the water? It seams logical that you would get a higher rate of diffusion than a standard air stone in the water method.