How Much Chlorine To Add To Pool

Pool Size

You’ll need to know exactly how many gallons of water are in your pool prior to adding any chlorine to the mix. For example, a round ring pool generally holds 4,978 gallons of water. In order to figure out how many gallons your pool has, measure and multiply the length, width and average depth together. Then, multiply by 5.9 for a round pool, 6.7 for an oval pool and 7.5 for a rectangular pool.

How Much Chlorine To Add To Your Pool

Use a pool chlorine test strip to check the current chlorine level before adding any extra chlorine. You should aim to keep your pool’s balance between 1-3 ppm. This means if your level is 1 ppm and you want to increase it, you need to add 0.00013 ounces per gallon to raise the chlorine level by 1 ppm. To raise a 10,000-gallon pool by 1 ppm, you will need to add 1.3 ounces of chlorine to your pool water.

When Should You Add Chlorine To Your Pool?

The frequency at which you’ll have to add chlorine to your pool will depend on the following:

• Weather: Warm weather can cause a loss of chlorine. Heavy rainfalls can also dilute the chlorine levels, so it’s recommended to add chlorine after periods of inclement weather. This will help to prevent algae growth and water discoloration.
• Usage: The more often the pool is used, the quicker chlorine breaks down. If the pool is being used regularly, you should add chlorine each week.
• Size: Chlorine needs to be added more often in larger pools.