How Many Bags Of Salt Do I Need For A 15000-Gallon Pool?

Salt Pool

A saltwater pool is a more convenient and healthy way to chlorinate the pool’s water because the chlorine is produced in a closed-loop with salt directly in the pool, eliminating the need to transport chlorine.

To help swimming pool owners, there are water pool generators available in different pool stores.

How many bags of salt do I need for a 15000-gallon pool? If you have 15000-gallon water of water, you will need nine bags of salt. But before adding salt, you need to determine first what is your salt level. You’ll know this if you check the salt chlorine generator owner’s manual.

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In this article, we will list down steps on how to add salt correctly into your pool. We will also list the difference between saltwater and chlorinated pool and three types of pool salt.

Steps To Add Salt Into The Pool Water

If you’re a newbie to pool maintenance, like adding salt to the pool, it’s better to determine first your salt level.

As I’ve said, you can check it in the chlorine generator manual. But for you to be able to add salt properly, you can follow the steps below:

  • Salt levels in the pool generally operate between 3000 to 4000 ppm. If your salt chlorine generator operates at 3500 ppm, you’ll need to add enough salt to bring the salt level to 3500ppm.

  • Next is to determine what is the current salt level in your pool. But if in case you just installed a new pool, remember that the salt level should be 0 ppm. If you have an older pool and need to convert to a standard chlorinator, it means that your pool has a low-level salt concentration. Typically it’s around 500 ppm.

  • To measure your pool’s current level, you need to use a saltwater test strip. If you have an older pool, the reading will be around 2.0. The table on the test strip converts the reading to a salt level of 500 ppm.

  • But if there’s a pool store nearby, you can take a water sample to verify the measured salt level. Don’t worry because this service is generally free and is more accurate.

  • To determine how many pounds you’ll be needing to bring the salt level to 3500 ppm, calculate the number of gallons in your pool. For this one, if you have 15000 gallons of water and the current salt level is 500, you’ll need 375 lbs of salt. Or it is equivalent to 9 bags of salt; remember that there are 40lbs in every pool salt bag.

  • Pool experts recommend using a salt that is at least 99.8% pure sodium chloride or NaCl. The preferred salt is evaporated, granulated, Non-iodized salt, food quality. Meaning, you should avoid using salt with anti-caking agents such as sodium ferrocyanide or known as the Yellow Prussiate of Soda (YPS), because it can cause some discoloration of the fittings and your pool’s surface finishes.

  • Before adding salt, you should turn off first the Salt Chlorine Generator found in the Control Unit. Please do not turn it on until the salt has completely dissolved. But remember to leave the pump on so the water can circulate properly and dissolve the salt.

  • Pouring the salt directly into the skimmer isn’t recommended. For better results, you need to empty the required salt into the pool’s shallow end. Remember to let it dissolve and circulate through the main drain. The salt may take up to 24 hours to dissolve completely, but if you use finer grades, it’ll dissolve faster.

  • If the salt is already dissolved, turn on the salt chlorinator. Check if the salt level is at 3500 ppm, and you should maintain it around this level. If it lowers to 3000 ppm, the salt generator’s efficiency may result in low chlorine production. When the salt level is higher than 3500 ppm, it can rapidly reduce cell life.

  • We said that you would need nine bags of salt for 15000 gallons of water. But for better results, you should only add eight bags and let them dissolve first completely.

Then retest your salt level first before adding the last bag of salt. It’s easier to add another bag of salt if it still requires it than to reduce the salt level if you’ve overshot the target salt level.

Difference Between The Saltwater Pool And Chlorinated Pool

In a saltwater pool, you use a filtering system called the salt chlorine generator, where the system uses electricity to turn the salt into chlorine.

While in a chlorinated pool, chlorine tablets or granules are added physically regularly with the same purpose as salt. A huge difference also exists between the health benefits of these two types of pools.

Saltwater pools, they said, are better for someone who has asthma or allergies. We know that chlorine smell quickly evaporates in chlorinated pools, especially in a contained indoor pool.

It is because of the mix of chlorine and ammonia that the smell evaporates quickly. You may find it irritating to swim when in an indoor chlorinated pool for a person with asthma or an allergy.

One study in 2003 found that young children who swim regularly in an indoor chlorinated pool are at risk of asthma or lung inflammation.

Though many would say that a saltwater pool is better, research is still needed to determine if this pool is the best alternative.

Different Types Of Pool Salt

There are three pool salts you can use in your pool. This salt has something to do with how they’re acquired and produced, price, and effectiveness.

  • Solar Salt – is similar to mechanically evaporated salt except that it uses wind and sunlight to evaporate the water. It is cost-effective because evaporation is said to be reusable. But there are also reports that it temporarily increases the bacteria in the salt. And this is why they consider it the worst type of salt.

  • Mined Salt – is considered by many the best type of pool salt that you can use. It’s because of its variety that ranges from 95% to 99% pure sodium chloride. It is also the most popular salt in the United States that most pool owners use in their pool.

    The US also produces this type of salt millions of tons every year, usually through deep shaft mining. This salt also works well with chlorine generators because of its few impurities that might damage the system.

  • Mechanically Evaporated Salt – comes from artificially-generated heat, which helps get rid of salty water, leaving the crystals behind. This salt contains minerals such as calcium, iron, and copper. These are bad for pools, so they use a metal sequestrant and monitor the hardness of the calcium in a pool.


Overall, you need nine bags of pool salt or 350 lbs of salt for 15000-gallon water. But you can’t just salt your pool unless you know what’s the exact salt level your pool needs.

To determine it, you can look at the back of the salt chlorine generator manual. There are three different types of pool salt you can use for your pool, but the most recommended is the mined salt.

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