75
100
125
150
200
250
300
400
600
800
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.4
2.5
75
100
125
150
200
250
300
400
600
800
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.8
2.9
How to use: Measure pool pH, temperature, calcium hardness,
and total alkalinity. Use the chart above to determine Ti, Ci,and Ai
from your measurements. Insert values of pH, Ti, Ci and Ai into the
above equation. If Si equals .2 or more, scaling andstaining may
occur. If Si equals -.2 or less corrosion or irritation may occur.
SALT LEVEL
Use the chart below to determine the amount of salt needs to
be added to reach the recommended levels. Use the equations
below to determine the size of your pool.