Muriatic acid (hydrochloric acid, 31.45% full strength or 14.5% "safer" acid). Pick your pool size for a full dose table, or use the calculator for any volume.
| Pool size | Dose |
|---|---|
| 1,000 gallons | 0.83 fl oz for pH 7.8 → 7.5 |
| 2,000 gallons | 1.7 fl oz for pH 7.8 → 7.5 |
| 5,000 gallons | 4.1 fl oz for pH 7.8 → 7.5 |
| 6,000 gallons | 5 fl oz for pH 7.8 → 7.5 |
| 10,000 gallons | 8.3 fl oz for pH 7.8 → 7.5 |
| 15,000 gallons | 12 fl oz for pH 7.8 → 7.5 |
| 18,000 gallons | 15 fl oz for pH 7.8 → 7.5 |
| 20,000 gallons | 17 fl oz for pH 7.8 → 7.5 |
| 25,000 gallons | 21 fl oz for pH 7.8 → 7.5 |
| 30,000 gallons | 25 fl oz for pH 7.8 → 7.5 |
Add
15fl oz
of Muriatic acid 31.45%
1.9 cups448 mL
Lowers pH from 7.9 to 7.5 in 15,000 gal at TA 80. TA afterwards: about 76 ppm.
Check the product label. Strengths vary by brand, so enter the % printed on yours. Add one chemical at a time, into the water, and never mix chemicals.
Save this test and get reminded when it is time to retest.
Pool Calc for iPhoneComing soon to the App Store