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Re: Night Time Aeration
Our water comes out of the tap at a pH of 9.8 and then takes on CO2 from the
atmosphere until it reaches a stabilized pH of 7.6. So CO2 IS used to
determine pH, in even a passive mechanism.
Aeration is of minimal efficacy to get O2 into a water column. The bubbles
aren't in contact with the water long enough to do any good. Surface
agitation is far more effective because it brings the water into contact
with a large atmospheric interface where it can take on O2.