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Pool Shock Dose Calculator

Cal-hypo in pounds and 1-lb bags with cost for breakpoint chlorination. Shock at dusk; swim only under 5 ppm FC.

Inputs

Inputs and assumptions

Total gallons.

Shock at dusk and run the pump overnight.

Cal-hypo bag price; 0 to skip.

Result

1-lb bags
1.3
Shock cost (USD)
$7.70
Cal-hypo shock (65%) (lbs)
1.3
Screening dose only. Never mix chemicals; dose at dusk; follow product labels and CDC pool-chemical safety guidance.

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Borax in pounds and 4-lb boxes for 30-50 ppm borates, plus cost. Borates buffer pH but never replace chlorine.

Outputs: Borax (20 Mule Team) (lbs) · 4-lb boxes · Borax cost (USD)

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Calcium Hardness Calculator

Calcium chloride in ounces and pounds for plaster 200-275 ppm. Confirm LSI after dosing to avoid scale.

Outputs: Calcium chloride needed (oz) · Calcium chloride (lb)

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Guides

01 Pool Chlorine Basics: Levels, Testing, and Safe Handling

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01 Pool Chlorine Basics: Levels, Testing, and Safe Handling 02 Salt System Care: Testing, Adding Salt, and Cell Maintenance 03 Water Balance Order: Adjust Alkalinity, pH, and Calcium Hardness

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