Pool-Calculator/formulas.md

1.1 KiB

Stabilizer

CYA Increase (ppm) = [Pounds of Stabilizer X 12] / (Pool Gallons / 10,000)

Adding Stabilizer

Target CYA = Current FC / 0.075

For Salt Pools

Target CYG (saltwater) = Current FC / 0.05

Dry Acid to Muriatic

1 pound of Dry Acid = 26 fl oz of 31.45% Muriatic 1.25 pounds of Dry Acid = 1 quart (32oz) of Muriatic 5 pounds of Dry Acid = 1 Gallon of Muriatic

Alkalinity Raising

Pounds of Sodium Bicarbonate (BP100) = [Desired TA Increase (ppm) * 1.4] / (Pool Gallons / 10,000)

TA Lowering

Total Alkalinity and Adjusted Alkalinity

Total Alkalinity is water's ability to resist pH changes. TA is the sum of all the concentrations of chemical ion species in your pool water that can react with (or consume) a hydrogen ion (H+). Adjusted Alkalinity is the Total Alkalinity minus the CYA multiplied by Correction Factor, which is based on the pH.

However, since pools are usually between 7.2 and 8.2 pH, just use the following to get Adjusted Alkalinity: AA = TA - (CYA * 0.33)

Basically, keep TA at around 80-120 during the winter, and 60-90 during the season