How do your corals look? Is there a reason, other than trying to chase the perfect pH for doing anything? You can drive yourself mad trying to have a perfect day and night pH...not to mention risk other bad things happening to your reef. If the corals look good, I would leave well enough alone.
I am not sure that increasing dissolved O2 levels will result in lower dissolved CO2 (carbonic acid) levels. In the aeration process, its not the oxygen that's doing the work in removing carbon dioxide. This has more to do with the physical air/water interface and oxygen/carbon dioxide reaching an equilibrium with their own levels in the air/water (via diffusion). While it rarely occurs, I think it may be possible to have high oxygen and high carbonic acid levels in water.
Reply With Quote
