10,000 gallon pool: how much of each chemical
For a 10,000-gallon pool, 12.8 fl oz of 10% liquid chlorine raises free chlorine (FC) 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% | 10 fl oz303 mL | 20 fl oz606 mL | 51 fl oz1.51 L | 102 fl oz3.03 L |
| Pool liquid chlorine 10% | 13 fl oz379 mL | 26 fl oz757 mL | 64 fl oz1.89 L | 1.0 gal (128 fl oz)3.79 L |
| Household bleach 6% | 21 fl oz609 mL | 41 fl oz1.22 L | 103 fl oz3.05 L | 1.6 gal (206 fl oz)6.09 L |
| Household bleach 8.25% | 14 fl oz429 mL | 29 fl oz858 mL | 72 fl oz2.14 L | 1.15 gal (145 fl oz)4.29 L |
| Cal-hypo 65% | 2.1 oz58 g | 4.1 oz116 g | 10.3 oz291 g | 1.3 lb582 g |
| Dichlor 56% | 2.4 oz68 g | 4.8 oz135 g | 11.9 oz338 g | 1.5 lb676 g |
| Trichlor 90% | 1.5 oz42 g | 3.0 oz84 g | 7.4 oz210 g | 14.8 oz421 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 | 1.4 lb635 g |
| Muriatic acid 31.45% | TA −10 ppm | 25 fl oz758 mL |
| Dry acid 93.2% | TA −10 ppm | 2.1 lb974 g |
| Muriatic acid 31.45% | pH 7.8 → 7.5 (TA 100, CYA 40) | 9.6 fl oz284 mL |
| Dry acid 93.2% | pH 7.8 → 7.5 (TA 100, CYA 40) | 12.8 oz365 g |
| Soda ash | pH 7.2 → 7.5 (TA 80, CYA 30) | 14.8 oz420 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 | 13.4 oz379 g |
| Stabilizer (CYA) | 0 → 40 ppm (new fill) | 3.35 lb1.51 kg |
| Calcium chloride 77% | CH +10 ppm | 1.2 lb545 g |
| Calcium chloride 77% | CH +50 ppm (one step) | 6.0 lb2.73 kg |
| Pool salt | 0 → 3,200 ppm (new fill) | 267 lb121.13 kg · 7 × 40 lb bags |
| Pool salt | +500 ppm | 41.7 lb18.93 kg |
| Model | Capacity (manufacturer) |
|---|---|
| Bestway APX 365 22ft x 52in | 10,668 gal |
On this page (9 sections)
With 12.5% chlorine, it takes 10.24 fl oz, and with 6% bleach, about 21 fl oz. The 12.8 fl oz figure matches the treatment table in Taylor's K-1005 test kit manual.
Quick answer: chlorine for a 10,000 gallon pool (depends on product)
From FC 1 to 4 ppm, add about 38 fl oz of 10% liquid chlorine, 31 fl oz of 12.5%, or 62 fl oz of 6% bleach. With 65% cal-hypo it is about 6.2 oz; with 90% trichlor, about 4.5 oz.
Many labels and dosing tables are written per 10,000 gallons, so this page also works as a converter. An easy rule to remember: one gallon of X% pool chlorine raises 10,000 gallons by X ppm. So a gallon of 12.5% adds 12.5 ppm here, and a gallon of 10% adds 10 ppm. If your label says "per 10,000 gallons," this page matches your pool; for other sizes, scale by your gallons ÷ 10,000.
Dose table: chlorine by product for +1/+2/+5/+10 ppm
Every row in the chlorine table is checked against an independent reference. Our engine gives 12.80 fl oz for 10% liquid chlorine (Taylor: 12.8), 2.054 oz for 65% cal-hypo (Taylor: 2.05), and 1.484 oz for 90% trichlor (Taylor: 1.48) at +1 ppm. The table rounds those to what you can actually measure. PHTA's figures for 12.5% liquid chlorine come out about 3.5% higher than ours, less than a test kit can detect. The methodology page explains the difference.
Shock dose: use your product’s label
Most shock labels are written per 10,000 gallons, so at this size you use the amount as printed. Follow the label for how much to add and for when swimming can resume (often when chlorine is back to 4 ppm).
Two numbers help you check what a dose will do here. One gallon of 12.5% liquid chlorine raises FC by about 12.5 ppm. A 1 lb bag of 65% cal-hypo raises FC by about 7.8 ppm and calcium by about 5.5 ppm.
pH and alkalinity: acid and baking soda
Alkalinity doses are fixed per ppm: about 1.4 lb of baking soda raises total alkalinity (TA) by 10 ppm, and about 26 fl oz (1.6 pints) of 31.45% muriatic acid lowers it by 10 ppm. Both match Taylor's table. pH doses are not fixed: dropping pH from 7.8 to 7.5 takes about 9.6 fl oz of muriatic acid when TA is 100 and stabilizer (CYA) is 40, and more at higher alkalinity. The legacy TFP (Trouble Free Pool) calculator gives the same 9.6 fl oz, a useful cross-check. For your own TA and CYA, use the muriatic acid calculator. For raising alkalinity, see baking soda in a pool.
Stabilizer, calcium, and salt
- Stabilizer (CYA): 13.4 oz per 10 ppm; 3.35 lb from 0 to 40 ppm. Details in the stabilizer calculator.
- Calcium chloride (77%): 1.2 lb per 10 ppm (Taylor: 1.20 lb). A +50 ppm step is 6 lb; pre-dissolve it in a bucket of pool water, since it heats up as it dissolves.
- Salt: 267 lb to go from 0 to 3,200 ppm, the same figure Hayward publishes for 10,000 gallons. That is seven 40 lb bags, with the last one partly used. Use the pool salt calculator if you are topping up.
Pools that hold about 10,000 gallons
In our model list, the Bestway APX 365 22 ft × 52 in is closest, at 10,668 gallons listed by Bestway. Its geometry at a 90% fill is 11,090 gallons, only 4% more, because steel-wall pools lose less volume to sloping sides than inflatable ones. Inground pools around 12 × 24 ft with an average depth near 4.5 ft also come out close to 10,000 gallons. For round pools near this volume, see 20 ft round and 21 ft round pools.
Calculator preset to this volume
The calculator at the top starts at 10,000 gallons with a sample test. Replace the readings with yours, choose your chlorine and acid, and it lists the steps in order with wait times. Neighboring sheets: 8,000 gallons and 12,000 gallons.
Safety. Add acid and chlorine separately, at least 30 minutes apart, with the pump running. Dilute acid by adding it to a bucket of pool water, never water to acid. Always follow the product label. Poison Control: 1-800-222-1222.
FAQ
How much chlorine do I put in a 10,000 gallon pool?
12.8 fl oz of 10% liquid chlorine per 1 ppm, 10.24 fl oz of 12.5%, or about 21 fl oz of 6% bleach. Aim for the target that matches your stabilizer (3–5 ppm at CYA 40). For other sizes, see how much chlorine to add. For older jugs, use the liquid chlorine calculator.
How much shock for a 10,000 gallon pool?
Use the amount on your shock product's label. Most labels are written per 10,000 gallons, so no scaling is needed. For reference, in 10,000 gallons one gallon of 12.5% liquid chlorine raises FC by about 12.5 ppm, and a 1 lb bag of 65% cal-hypo by about 7.8 ppm.
How much muriatic acid for a 10,000 gallon pool?
About 9.6 fl oz of 31.45% acid for pH 7.8 to 7.5 at TA 100 and CYA 40, and about 26 fl oz to lower TA by 10 ppm. The calculator never lowers pH by more than 0.4 in one step.
How many chlorine tablets should I add to my 10,000 gallon pool?
Match tablets to your daily chlorine loss. Each ounce of 90% trichlor adds about 0.67 ppm FC in 10,000 gallons. A pool losing 1 ppm a day uses about 10.4 oz of trichlor a week, which also adds about 4.2 ppm stabilizer every week. Divide the weekly ounces by your tablet weight, and watch CYA over the season. The chlorine tablet calculator projects this for you.
How much CYA for a 10,000 gallon pool?
13.4 oz of stabilizer per 10 ppm. For a new fill, 3.35 lb brings CYA to 40 ppm; for a salt pool aiming at 70 ppm, about 5.85 lb. Add it slowly (a sock in the skimmer basket or pre-dissolved) and retest after several days.
Sources
- Taylor Technologies, K-1005 instruction manual and treatment tables: PDF
- Hayward, How much salt to add: hayward.com
- PHTA fact sheet, Sodium hypochlorite: phta.org
- Bestway, APX 365 22 ft × 52 in product page, read 2026-09-29: bestwayusa.com
- Secondary cross-check for the pH model: legacy TFP pool calculator, legacy.poolcalculator.com