Quote:
Originally posted by gary faulkner
Sorry, I read that wrong. If my Ph falls I always check to see if the alk is lower. It has a direct relationship not inverse?
Thanks
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pH is positively correlated with total alkalinity and negatively correlated with total CO2. Raise total alkalinity, everything else equal, and you'll raise pH. Raise total CO2, everything else equal, and you'll lower pH. Raise both total alkalinity and total CO2 proportionally and you'll maintain the same pH.
These relationships ARE NOT linear, but understanding the general form of the relationships is very useful.