This calculator tells you the exact amount of acid needed in any pool or spa to lower pH or total alkalinity. Enter pool volume in gallons or liters, current pH, . Free pH Calculator, calculate amount of Muriatic Acid or Soda Ashe needed to adjust pool pH to desired level. Jul 23, 2017 - Try our new pool dosing calculator, also available in the App Store and . the standard chemicals are Orenda products and how to dose them. Chart No. 2 - Lowering pH with Muriatic Acid (If pH is over 7.6, add this amount of acid, then Acid may be added in doses of up to 1 quart per 10,000 gallons. Your pool water should be maintained at the correct chlorine level at all times . pH is measured on a scale from 0 (strong acid) to 14 (strong alkaline) and pH neutral is 7. . increase the pools Total Alkalinity - check the instructions for dosing details. . It is better to calculate the pool volume in litres rather than gallons, as it is . pool water, it forms hypochlorous acid and hydrochloric acid. At pH 7.0, swimming pool water is neutral, neither acidic nor alkaline . One hour should be allowed between half quart doses. The acid calculate the flow rate required for a 36,000 gallon swimming pool, divide 36,000 by 6 hours multiplied by 60 minutes . State codes require that chlorine be injected into the pool water through the . Neutral. Very basic (alkaline). 0. 7. 14. The ability of chlorine to oxidize . This can be accomplished with the addition of baking soda using the following formula: 1-. They have a more pH neutral product that won't require as much pH adjustment afterwards. . For a 20,000 gal pool, about 60 lbs of Borax, and 4 gallons of acid. A calculator for borax dosage can be found at the poolcalculator website. Aug 18, 2010 - One of the most common pool chemicals is hydrocholoric acid, often. . A pH of 7 is neutral. . When calculating how much hydrochloric acid is needed to neutralize your pool water to the optimal pH range, you need to know .