Brad,
I understand what your saying, but it does not explain why in 24 hours I had a 0.2 drop in ph despite high alkalinity. Then I added buffer, and it dropped even more. I understand why I have calcium perciptation on my galss, but it still does not explain why my pH was dropping .2 a day. I have found tons of information on how the alk/ca relationship works, and understand that as well. I also keep african cichlids (tropheus) and am familiar with maintaining a high ph/dKH. Never in any of those tanks have I ever had a sharp drop in pH. It's really weird. The tank was plugging along just fine, I didn't add anything, or change anything and all of a sudden it started falling off huge. It's not a high co2 in my house thing because I have other tanks in my room as well, and they do fine. I am also very familiar with the carbonic acid cycle, and all my ph measurements were taken at night, before the lights went out. When pH is at its highest. Also, there is very little in the tank as far a co2 producing things go. I am baffled. Any ideas?
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