Quote:
|
Originally Posted by Robert Hudson ...So would you not agree if you have fairly hard water and are not adding anything to change the KH, then you can get a pretty accurate reading using a KH/pH chart right?
... |
Not necessarily and this is the problem with the chart. The chart relies on KH being made up mainly of either carbonates or bicarbonates (I don't remember which one offhand). There are tap waters where the make up of the KH is such that it makes the chart invalid.