31
Index
Water Balance
Condition
Recommendations
Below 9.6
Highly Corrosive
Increase pH to 7.5 - 7.8.
Increase Calcium Hardness
to at least 50 mg/l.
Increase Total Alkalinity to 100
mg/l or higher as necessary.
Retest Water Balance.
9.6 - 10.5
Corrosive
10.6 - 10.9
Acceptable
Balance
Retest water regularly.
11.0 - 11.2
Ideal Balance
No action required. *
11.3 - 11.6
Acceptable
Balance
Retest water regularly.
11.7 - 12.6
Scale Forming
Decrease pH to 7.2 - 7.5.
Decrease Total Alkalinity to 150
mg/l or lower as necessary.
Retest Water Balance.
Above 12.6
Highly Scale
Forming
*NB: If scale forms or corrosion is apparent seek expert advice,
even if an ideal balance is indicated.
Interpreting the Result
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