Muriatic Acid Pool Calculator

This calculator determines how much muriatic acid to add to lower your pool's pH to the optimal level.

Dosing Formula:

Acid Needed = (pH Reduction / 0.2) x 1.5 fl oz per 10,000 gallons

Optimal pH Range:

• • Ideal pH: 7.2 - 7.6
• • Target pH: 7.4 (optimal)
• • Maximum pH: 7.8
• • Minimum pH: 7.0

Safety Precautions:

• • Always add acid to water, never water to acid
• • Wear safety goggles and gloves
• • Pour slowly into deep end with pump running
• • Never add more than 1 quart per 10,000 gallons at once
• • Wait 6-8 hours before retesting pH

Application Tips:

• • Dilute acid in a bucket of pool water first
• • Pour near return jets for better circulation
• • Test pH after 6-8 hours of circulation
• • Make gradual adjustments over several days

Common Concentrations:

• • Standard: 31.45% (20° Baumé)
• • Diluted: 15-20%
• • Pool stores typically sell 31.45%