How Much Chlorine for a 19,500 Gallon Pool?
Chlorine amounts for a 19,500 gallon pool. Use the table or calculator below.
Recommended chlorine range
For pools, keep free chlorine between 1–3 ppm.
Dosage table (from 0 ppm)
| Chlorine increase | Liquid chlorine (10%) | Granular shock |
|---|---|---|
| 1 ppm | 0.2 oz | 1.9 oz |
| 2 ppm | 0.3 oz | 3.9 oz |
| 3 ppm | 0.5 oz | 5.8 oz |
| 4 ppm | 0.6 oz | 7.8 oz |
| 5 ppm | 0.8 oz | 9.8 oz |
Quick calculator
For your exact levels, use our Pool Chlorine Calculator.
FAQ
How much chlorine should a pool have?
Maintain 1–3 ppm free chlorine for most pools. Test 2–3 times per week.
What happens if chlorine is too low?
Low chlorine allows bacteria and algae to grow. Raise it with liquid chlorine or granular shock.
How often should chlorine be added?
Add chlorine as needed to keep 1–3 ppm. After heavy use or rain, test and add more.
Can I use liquid or granular chlorine?
Yes. Liquid chlorine (10%) and granular shock both work. Use the amounts in the table above for your pool size.