Pool Alkalinity Calculator

This calculator determines how much chemical to add to adjust your pool's total alkalinity to the optimal range.

Alkalinity Adjustment Formulas:

Ideal Alkalinity Levels:

• • Optimal range: 80-120 ppm
• • Minimum acceptable: 60 ppm
• • Maximum acceptable: 180 ppm
• • Critical: Below 60 or above 200 ppm

Why Alkalinity Matters:

• • pH buffer - prevents rapid pH swings
• • Protects pool equipment from corrosion
• • Prevents plaster etching and staining
• • Improves chlorine effectiveness
• • Enhances swimmer comfort

Adjustment Guidelines:

• • Adjust alkalinity before adjusting pH
• • Make gradual changes over several days
• • Test 6-8 hours after chemical addition
• • Never exceed 20 ppm change per day
• • Circulate water for proper mixing

Common Alkalinity Problems:

• • Low Alkalinity: pH instability, equipment damage
• • High Alkalinity: Cloudy water, scaling, poor chlorine efficiency
• • Rapid Changes: Usually indicates water balance issues

Chemical Safety:

• • Baking soda: Generally safe, dissolve before adding
• • Muriatic acid: Dangerous - wear protection, add slowly
• • Never mix chemicals together
• • Store chemicals properly and separately