Pool Water Balance & LSI Calculator

See where your water is now, choose practical targets, and follow a staged adjustment plan using the product you actually own.

Private by design: readings and saved history stay in this browser unless you export them.

1. Pool and Current Readings

Pool volume, gallons Pool surface Primary pool sanitation system Temperature unit Water temperature pH Total alkalinity, ppm Calcium hardness, ppm Cyanuric acid (CYA), ppm Total dissolved solids, ppm Free chlorine, ppm Total chlorine, ppm My pool uses a borate treatment

2. Desired Targets

Target pH Target total alkalinity, ppm Target calcium hardness, ppm Target CYA, ppm Target free chlorine, ppm Target temperature

Targets are planning values, not universal requirements. Follow applicable codes, your pool builder’s guidance, and current product labels.

3. Product Selection

Brand preference Chlorine product Alkalinity product pH increaser pH reducer Calcium-hardness product Stabilizer/CYA product

Your Water Balance

Current water — today’s readings

Balanced

Calculate to evaluate current readings.

0.00

Measured TA80 ppm

Carbonate alkalinity67 ppm

CYA alkalinity removed13 ppm

Borate alkalinity removed0 ppm

Projected water — selected targets

Projected

Your selected targets will be evaluated here.

0.00

Staged Action Plan

Enter accurate readings and select Calculate My Water.

Do not add every listed chemical at once. Complete one stage, circulate the water, and retest before continuing. Never mix pool chemicals. The product label controls.

Show calculation details

Saturation pH—

TDS factor A—

Temperature factor B—

Calcium factor C—

Saved Test History

Saved only in this browser.

Date	Volume	pH	TA	CH	CYA	Temp	LSI	Status