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#1
July 31st 04, 10:17 PM
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pH Buffering
If my KH is 90mg/L and GH is 40mg/L, why am I having pH swings of 7.6 in
the morning to 8.8 in the evening? Thanks. Kathy 
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#2
August 1st 04, 02:43 AM
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pH Buffering
"Jeff & Kathy Brown" wrote in message ... If my KH is 90mg/L and GH is 40mg/L, why am I having pH swings of 7.6 in the morning to 8.8 in the evening? Thanks. Kathy Seems strange, but I believe KH of 120 to 140 is preferred, so a little more buffering could not hurt. Secondly, assuming you are actually using up all that buffer, some carbonates disolve (recover) faster than others. So perhaps a faster reacting carbonate would help.
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