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Alkalinity Adjustment Calculator

Baking soda in ounces, pounds, and 4-lb boxes to reach target TA. Fix alkalinity before touching pH.

Inputs

Inputs and assumptions

Pool volume.

Measured alkalinity.

Usually 80-120.

Result

4-lb boxes
0.8
Baking soda (lb)
3.3
Baking soda needed (oz)
53.4
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 Water Balance Order: Adjust Alkalinity, pH, and Calcium Hardness

Related articles

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

Workspace

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