# Swimming Pool Water Balance Equations Formulas Calculator

## Maintenance Hot Tub Pool Wading

### Solving for alkalinity factor.

 Water Temperature (°F) Temperature Factor (TF) CaCO3 PPM Calcium Hardness (CF) Total Alkalinity PPM CaCO3 Alkalinity Factor (AF) 32 0.0 5 0.3 2 0.7 37 0.1 25 1.0 25 1.4 46 0.2 50 1.3 50 1.7 53 0.3 75 1.5 75 1.9 60 0.4 100 1.6 100 2.0 66 0.5 150 1.8 150 2.2 76 0.6 200 1.9 200 2.3 84 0.7 300 2.1 300 2.5 94 0.8 400 2.1 400 2.6 105 0.9 800 2.5 800 2.9 128 1.0 1000 2.6 1000 3.0

#### Inputs:

 Langelier Saturation Index (SI)
 pH
 temperature factor (TF)
 calcium hardness factor (CF)

#### Conversions:

 Langelier Saturation Index (SI)= 0 = 0
 pH= 0 = 0
 temperature factor (TF)= 0 = 0
 calcium hardness factor (CF)= 0 = 0

#### Solution:

 alkalinity factor (AF)= NOT CALCULATED

#### Other Units:

Change Equation
Select to solve for a different unknown
 Langelier Saturation Index pH (test kit) temperature factor calcium hardness factor alkalinity factor

 turnover rate or time pool volume or size pump flow rate

References - Books:
Haan, William D. and Johanningsmeier, Julie S. Swimming Pool Pest Management: A Training Manual for Commercial Pesticide Applicators and Swimming Pool Operators. Kent County Health Department and Michigan State University. Unknown date.

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By Jimmy Raymond

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