On Wed, 10 May 2006 00:13:55 GMT, Altum
wrote:

Mister Gardener wrote:
On Tue, 09 May 2006 21:23:33 GMT, Altum
wrote:


lot of plants. Normally, you use an airstone/surface agitation to get
atmospheric CO2 into the tank.

Huh? You lost me.

-- Mister Gardener
-- Pull the WEED to email me

Surface agitation keeps air and water CO2 in equilibrium just as it does
with oxygen and other gasses. If you are NOT adding extra CO2, plants
deplete the CO2 in the tank much as fish deplete oxygen. Surface
agitation helps add CO2 back into the water.

This is the first time I have ever heard that. Because you are you, I
will believe you. But I could benefit from some more opinions to
satisfy my skepticism.

-- Mister Gardener
-- Pull the WEED to email me