Pool Shock Calculator

This calculator determines the amount of pool shock needed to raise your chlorine to the target level for effective sanitization.

Formula Used:

Shock Amount = (Pool Volume x PPM Increase x 8.33) / (% Available Chlorine x 100)

When to Shock Your Pool:

• • Weekly maintenance shocking
• • After heavy pool usage
• • Following algae treatment
• • When chloramines are detected
• • After rainstorms

Shock Levels:

• • Maintenance: 3-5 ppm
• • Standard shock: 10 ppm
• • Algae treatment: 20-30 ppm

Safety Guidelines:

• • Add shock at sunset/evening
• • Never swim during shocking
• • Wait for chlorine to drop below 3 ppm
• • Run pump for 8+ hours after shocking
• • Never mix different shock types

Available Chlorine Percentages:

• • Cal-Hypo: 70%
• • Liquid Chlorine: 12.5%
• • Lithium Hypo: 35%
• • Dichlor: 62%