How much Chlorine should I put in my Intex pool?

With spring arriving quickly, many users are asking for help with new pools or starting up a pool after the off season. One of the biggest and most important questions is how much Chlorine to add to your water. The amount of Chlorine that should be added depends on the size of your pool and how many gallons of water it holds.

The chart below should offer a good staring point for most users. It lists the size of your pool, the water capacity in gallons, and how many liquid ounces & cups that should be added to the water. Note that the calculations are approximate, and the number of Cups of Chlorine Bleach are rounded up because it’s better to have a little too much chlorine than not enough.

Also remember that adding chlorine once is not enough. You must add it continuously, possibly each day. It’s best to do so as part of daily and weekly maintenance routines.

Easyset / Inflatable Ring Pools

Pool Size
(Diameter x Depth)
Capacity
(Gallons)
Chlorine Bleach
(Oz / Cups)
8′ x 30″ 639 8.5oz / 1.25C
10′ x 30″ 1,081 14oz / 1.75C
12′ x 30″ 1,485 19.5oz / 2.5C
12′ x 36″ 1,779 23oz / 3C
15′ x 33″ 2,587 33.5oz / 4.25C
15′ x 36″ 2,822 36.5oz / 4.75C
15′ x 42″ 3,284 42.5oz / 5.5C
15′ x 48″ 3,736 48oz / 6C
16′ x 42″ 3,754 48.5oz / 6.25C
16′ x 48″ 4,273 55oz / 7C
18′ x 42″ 4,786 65oz / 8.25C
18′ x 48″ 5,455 72oz / 9C
18′ x 52″ 5,894 77.5oz / 9.75C

Frameset / Metal Frame Pools

Pool Size
(Diameter x Depth)
Capacity
(Gallons)
Chlorine Bleach
(Oz / Cups)
10′ x 30″ 1,185 15.5oz / 2C
12′ x 30″ 1,718 22oz / 2.75C
15′ x 36″ 3,282 42.5oz / 5.5C
15′ x 42″ 3,861 49.5oz / 6.25C
15′ x 48″ 4,440 57oz / 7.25C
16′ x 48″ 5,061 65oz / 8.25C
18′ x 42″ 4,950 63.5oz / 8C
18′ x 48″ 6,423 82.5oz / 10.5C
18′ x 52″ 6,981 89.5oz / 11.25C
20′ x 52″ 8,638 111oz / 14C
24′ x 48″ 11,483 147oz / 18.5C
24′ x 52″ 12,481 160oz / 20C

Rectangular Frame Pools

Pool Size
(Diameter x Depth)
Capacity
(Gallons)
Chlorine Bleach
(Oz / Cups)
18′ x 9′ x 48″ 3,881 50oz / 6.5C
18′ x 9′ x 52″ 4,545 58.5oz / 7.5C
22′ x 13′ x 52″ 7,159 92oz / 11.5C
24′ x 12′ x 52″ 8,403 108oz / 13.5C
32′ x 16′ x 52″ 14,364 184oz / 23C

Oval Frame Pools

Pool Size
(Diameter x Depth)
Capacity
(Gallons)
Chlorine Bleach
(Oz / Cups)
18′ x 10′ x 42″ 2,885 37oz / 5C
18′ x 12′ x 48″ 4,390 56.5oz / 7.5C
20′ x 12′ x 48″ 4,393 65.5oz / 8.5C
24′ x 12′ x 48″ 5,407 79oz / 10C
28′ x 12′ x 48″ 6,420 92.5oz / 12C

8 thoughts on “How much Chlorine should I put in my Intex pool?

    • A 10′ x 30″ Frameset pool hols 1,185 gallons, which works out to about 2 cups of Chlorine Bleach. We have added this size of pool to this post. Thanks for the question!

  1. Is it necessary to shock the pool after a garden hose fill?
    How much bleach do I add to shock the pool? 12’x30″ easyset
    How long should you let it dissipate before going into a maintenance cycle?
    How long should you wait after bleach before swimming?

    • If you fill with treated city water, then an immediate shock shouldn’t be necessary, but there wouldn’t be any harm in doing it. If you are filling with well water or some other untreated source, then an immediate shock would be a good idea.

      Check our blog post “How much chlorine” and find your pool on the chart.

      There’s no firm guideline on how long to wait after adding bleach, but an hour or so should be plenty assuming your pump is running. If you add bleach at night, then it has time to work all night without swimmers and without the sun breaking it down.

  2. Hello,
    I have a 14 x 42 metal frame intex above ground pool and would like to know how much chlorine granules would I put in for this size pool. Could you also tell me how much stabilizer and algaecide I need as well. Should I also be putting in shock and if so how much. This is to start up the pool as well as maintain it on a daily and weekly basis.

    Thank you so much. I look forward to hearing from you

    • To start with, you’ll do best with chorine tablets because they add chlorine and stabilzer at the same time. Get a test kit that measures CYA (stabilzer) and when it starts to get to your target level, switch to plain bleach. If you keep all of your chemical levels in line, you shouldn’t need algaecide. Just an occasional shock every 7-10 days, or after a day of heavy use.

Leave a Comment