Jim Brown wrote:
GiveMeABMW wrote in message
...

What kind adds the most oxygen... between bubble walls, air stones, discs,
etc.?

Also with the stones, is it safe to put them underneath the substrate?

And how many of whichever kind is best would I need for a 29 gallon tank

with 2

fish? Thanks!


For all intents and purposes, none of your options adds measurable oxygen to
the water. Their prime purpose is to circulate water so that carbon dioxide
can be exchanged at the moving surface for oxygen.

Really? So, if I had a CO2 gizmo... I wouldn't want a bubblewall
'exchanging' the CO2?

That's actually something I don't really get (with my only my highschool
knowledge of chemistry) How do you 'diffuse' or mix a gass with a liquid?

Cause the way I see it: CO2 + H2O = H2O + ...
Oh wait... I see the need to do some Chem. revision... I think what
you're saying does make sense...

Damn. I should've paied more attention in class.

Leandra