08-06-2003, 03:17 AM
Join Date: Feb 2003
That's intriguing, but I did measure 3 ppm in a well aerated water sample that I used in my experiments. No fish were in the sample. Nevertheless, I could have been measuring equilibrium CO2 plus some other source of hydrogen ions in the water, because it was not a distilled water sample. Like you noted, it does not change the results of the experiment, but it could possibly explain the 2 ppm error in the results of the experiment.
I shall post all the ugly details as soon as I collect them. It's a few years old, and it may be on my home computer, or I may have to try and retrieve it from Tom's Place archives.
I shall be starting a new thread for this in the "Aquarium Maintenance and Science" forum. I notice bebop has dropped out of the exchange; he may be lurking, but it's wrong to hijack his thread.