2,000 gallon pool: how much of each chemical
In a 2,000-gallon pool, 2.6 fl oz of 10% liquid chlorine or 2 fl oz of 12.5% raises free chlorine by 1 ppm.
Always follow your product’s label directions. Pool and spa chlorine, bromine, shock and algaecides are EPA-registered pesticides: use products labeled for pool or spa use, and don’t swim or soak until levels are within the limit on your product’s label. If this page and a label disagree, the label wins.
| Product | +1 ppm FC | +2 ppm FC | +5 ppm FC | +10 ppm FC |
|---|---|---|---|---|
| Pool liquid chlorine 12.5% | 2.0 fl oz61 mL | 4.1 fl oz121 mL | 10 fl oz303 mL | 20 fl oz606 mL |
| Pool liquid chlorine 10% | 2.6 fl oz76 mL | 5.1 fl oz151 mL | 13 fl oz379 mL | 26 fl oz757 mL |
| Household bleach 6% | 4.1 fl oz122 mL | 8.2 fl oz244 mL | 21 fl oz609 mL | 41 fl oz1.22 L |
| Household bleach 8.25% | 2.9 fl oz86 mL | 5.8 fl oz172 mL | 14 fl oz429 mL | 29 fl oz858 mL |
| Cal-hypo 65% | 0.4 oz12 g | 0.8 oz23 g | 2.1 oz58 g | 4.1 oz116 g |
| Dichlor 56% | 0.5 oz14 g | 0.95 oz27 g | 2.4 oz68 g | 4.8 oz135 g |
| Trichlor 90% | 0.3 oz8.4 g | 0.6 oz17 g | 1.5 oz42 g | 3.0 oz84 g |
Liquid chlorine percent is the trade percent on pool chlorine jugs; bleach percent is by weight. Cal-hypo adds calcium. Dichlor and trichlor add stabilizer (CYA). To shock, follow the directions on your product’s label.
| Product | Change | Amount |
|---|---|---|
| Baking soda | TA +10 ppm | 4.5 oz127 g |
| Muriatic acid 31.45% | TA −10 ppm | 5.1 fl oz151 mL |
| Dry acid 93.2% | TA −10 ppm | 6.8 oz194 g |
| Muriatic acid 31.45% | pH 7.8 → 7.5 (TA 100, CYA 40) | 1.9 fl oz56 mL |
| Dry acid 93.2% | pH 7.8 → 7.5 (TA 100, CYA 40) | 2.5 oz73 g |
| Soda ash | pH 7.2 → 7.5 (TA 80, CYA 30) | 2.9 oz84 g |
pH doses depend on your TA and CYA, so use the calculator for your numbers. Acid and pH-up amounts are rounded down.
| Product | Change | Amount |
|---|---|---|
| Stabilizer (CYA) | +10 ppm | 2.7 oz76 g |
| Stabilizer (CYA) | 0 → 40 ppm (new fill) | 10.7 oz303 g |
| Calcium chloride 77% | CH +10 ppm | 3.8 oz109 g |
| Calcium chloride 77% | CH +50 ppm (one step) | 1.2 lb545 g |
| Pool salt | 0 → 3,200 ppm (new fill) | 53.4 lb24.23 kg · 2 × 40 lb bags |
| Pool salt | +500 ppm | 8.35 lb3.79 kg |
| Model | Capacity (manufacturer) |
|---|---|
| Intex Metal Frame 12ft x 30in | 1,718 gal |
| Intex Prism Frame 12ft x 30in | 1,718 gal |
| Intex Clearview Prism Frame 13ft x 6.5ft x 48in | 2,224 gal |
| Bestway Steel Pro MAX 12ft x 30in | 1,710 gal (not confirmed) |
On this page (9 sections)
With 6% bleach, it takes 4.1 fl oz (about half a cup). Popular 12-foot frame pools hold closer to 1,700 gallons, so check your model before you dose.
Quick answer: chlorine for a 2,000 gallon pool (depends on product)
A typical top-up of free chlorine (FC) from 1 to 4 ppm needs about 7.7 fl oz of 10% liquid chlorine, 6.1 fl oz of 12.5%, or 12 fl oz (1½ cups) of 6% bleach. If your water has 40 ppm of stabilizer (CYA), keep FC at 3–5 ppm. With no stabilizer, keep it at 2–4 ppm.
Product strength matters more than you might think. Half a cup of 6% bleach adds 1 ppm, but half a cup of 12.5% pool chlorine adds nearly 2 ppm. Always read the percent on the label, and enter it in the calculator if it differs from the table.
Dose table: chlorine by product for +1/+2/+5/+10 ppm
At this size, liquid doses fit in a measuring cup: +5 ppm is 13 fl oz of 10% chlorine, and even +10 ppm is 26 fl oz, less than a quart. Dry products stay under half an ounce per ppm (0.4 oz of 65% calcium hypochlorite, or cal-hypo, and 0.3 oz of 90% trichlor), so weigh them instead of guessing with a scoop.
If you use trichlor tablets in a floater, remember they add stabilizer with every dose (0.6 ppm CYA per 1 ppm of chlorine). In 2,000 gallons, it builds up quickly. Test CYA every couple of weeks and switch to liquid chlorine when it reaches about 50 ppm.
Shock dose: one-fifth of the label amount
Take the shock amount from your product's label. Labels usually give it per 10,000 gallons, and a 2,000-gallon pool needs one-fifth of that. With a cal-hypo label of 1 lb per 10,000 gallons, weigh out about 3.2 oz. With a liquid chlorine label of 1 gallon per 10,000 gallons, pour about 26 fl oz.
One pound of 65% cal-hypo would add about 39 ppm of chlorine here, plus about 27 ppm of calcium, so a full 1 lb bag adds far too much. Measure by weight. Stay out of the pool until chlorine drops to the label's swim limit (often 4 ppm). Full steps: how to shock a pool.
pH and alkalinity: acid and baking soda
To lower pH from 7.8 to 7.5 when total alkalinity (TA) is 100 ppm and CYA is 40 ppm: about 1.9 fl oz of 31.45% muriatic acid, or 2.5 oz of dry acid. To lower alkalinity by 10 ppm: about 5.1 fl oz of muriatic acid. To raise it by 10 ppm: about 4.5 oz (127 g) of baking soda. If pH is low but alkalinity is fine, use soda ash instead: about 2.9 oz to raise pH from 7.2 to 7.5 at TA 80 and CYA 30. Try your own numbers in the muriatic acid calculator, or read baking soda in a pool before raising alkalinity.
Stabilizer and calcium
Stabilizer: 2.7 oz per 10 ppm, or about 10.7 oz to bring fresh water to 40 ppm. The stabilizer calculator covers other targets. Calcium chloride (77%): 3.8 oz per 10 ppm. Frame pools with a vinyl liner seldom need it. If you run a small salt system, raising salt from zero to 3,200 ppm takes about 53 lb of pool salt (buy two 40 lb bags).
Pools that hold about 2,000 gallons
At this size, the size printed on the box is the most misleading. Intex lists 1,718 gallons for both its Metal Frame and Prism Frame pools at 12 ft × 30 in. Geometry at 90% fill gives 1,904. Bestway lists its inflatable Fast Set 12 ft × 30 in at 1,421 gallons. The box shows the same size, but the real water volume differs by about 300 gallons.
It matters for every dose. Treating a 1,718-gallon pool as 2,000 gallons means 16% too much of everything: 7.7 fl oz of 10% chlorine for +3 ppm instead of 6.6 fl oz. Larger frame pools, such as the Intex Clearview Prism Frame (13 ft × 6.5 ft × 48 in, 2,224 gallons), hold slightly more than 2,000 gallons. The 12 ft round pool page lists capacities for that diameter.
Calculator preset to this volume
The calculator at the top uses 2,000 gallons. If you know your model's listed capacity, enter it instead. Then enter your test results to get the steps for your exact water. Neighboring charts: 1,000 gallons and 3,000 gallons.
Safety. Add one product at a time with the filter running, and wait about 30 minutes before adding the next. Chlorine and acid must never meet outside the pool. Always follow the product label. Poison Control: 1-800-222-1222.
FAQ
How much chlorine do I put in a 2,000 gallon pool?
For each 1 ppm: 2.0 fl oz of 12.5% liquid chlorine, 2.6 fl oz of 10%, or 4.1 fl oz of 6% bleach. To raise FC from 1 to 4 ppm, you need about 7.7 fl oz of 10%. The liquid chlorine calculator adjusts for a jug that has lost strength.
How much shock for a 2,000 gallon pool?
Scale the label on your shock product: 2,000 gallons is one-fifth of a "per 10,000 gallons" dose. A label that says 1 gallon of liquid chlorine per 10,000 gallons means about 26 fl oz here. Don't swim until chlorine is back at or below the label's limit.
How much muriatic acid for a 2,000 gallon pool?
About 1.9 fl oz of 31.45% acid for pH 7.8 to 7.5 at TA 100 and CYA 40, and about 5.1 fl oz to lower TA by 10 ppm. Pour it slowly in front of a return jet, then retest after 30 minutes.
Sources
- Intex Metal Frame and Prism Frame 12 ft × 30 in, and Clearview Prism Frame product pages, read 2026-09-29: intexcorp.com
- Bestway, Fast Set 12 ft × 30 in product page, read 2026-09-29: bestwayusa.com
- Side effects of trichlor and dichlor (PHTA figures) and every formula on this page: methodology