Can I Use Chlorine Granules Instead Of Tablets?

Can I Use Chlorine Granules Instead Of Tablets?

Chlorine is the go-to solution when it comes to sanitizing and getting your pool or spa cleaned up and getting rid of bacteria. Not many people know the differences between chlorine tablets and granules and which one to use. In this article, we’ll give you accurate information about the two forms of chlorine sanitizer.

Actually, the preferred choice between tablets and granules is highly dependent on you. After you’ve seen the differences, you’ll be able to make a decision on which to use.


There’s not enough of a difference between the two forms of chlorine when it comes to their pricing. They are very affordable for the average pool owner and can easily be gotten.

Ease of use

This is a very close comparison as some people will likely say it’s easier to use chlorine tablets as you can easily just add them to the floating dispensers in your pool and allow them to follow them around, circulating everywhere. Even if this possesses a bit of truth, it is still important to note that it can be somewhat harder to boost water levels with a tablet.

Granules, on the other hand, offer more flexibility as you can adjust the dosing quite easily compared to adding more or less slow-dissolving tablets. So the final judgment when it comes to the ease of use is drawn.

Bacteria control

Both of these forms are very good at bacteria control. It works quite quickly and effectively to keep your hot tub safe, so they are both very good in this area. One key thing to take note of is that the chlorine levels in your pool should be between 3-5 parts per million.

If your water levels are not actually at the level stated, then it is certain that bacteria will likely thrive in the water. The benefit of chlorine tablets in this area is that the tablets slowly dissolve over time, so there’s a high chance of you having chlorine in the water over a period of time.

However, chlorine granules must actually be added, so there’s also a higher risk that the levels may drop overtime if the hot tub isn’t attended to, causing bacteria growth. Once again, they both scored a draw in this area.

Impact on bathers

Chlorine tablets are actually acidic, hence their name, trichloroisocyanuric acid. While chlorine granules, called sodium dichloroisocyanurate acid, are relatively neutral in pH. This simply means that with the chlorine tables dissolving in your water, you’re also kind of reducing your pH and alkalinity levels, while in the case of the chlorine granule, the effect on pH and alkalinity levels is minimal.

The pH and alkalinity can leave bathers with itchy eyes and irritating skin if not balanced, so this is an area where the chlorine tablets stand out with a little edge. We have compared the two forms, it is now up to you to check and balance and know the preferred chlorine that will be suitable for your pool.

Do I need to dissolve chlorine granules?

Chlorine is a necessary pool chemical because of its effectiveness in killing bacteria and sanitizing the pool entirely. Chlorine comes in four forms, which are granular, sticks, tablets, and liquid.

You can apply granular by either broadcasting it into the pool or adding it through the skimmer.

Let’s quickly look at steps towards adding it to the skimmer and adding it directly. To add it through the skimmer, you have to first mix it with water.

  1. Put on your gloves and goggles.
  2. Fill the bucket half full of warm water. You can decide to use the bucket to scoop your pool water, then go ahead and add the chlorine granules to the bucket. Then add one to two pounds, depending on the actual size of your pool.
  3. Now go on to stir the granular chlorine and the water with a wooden stick and try not to breathe in chlorine vapors.
  4. The next thing to do is to turn on the pump. The pump will help circulate the chlorine all around the pool. Now go ahead and take off the skimmer cover and slowly pour the solution into the skimmer. Carefully pour it so the solution does not splash on you or get on the pool tile.
  5. Put back the skimmer cover and let the pool circulate for about three hours before going ahead and using the pool.

Now let’s look at how you can add the chlorine directly into the skimmer without having to mix it.

You first turn on the pump. Allow it to run for a few minutes for it to circulate and blow out the air that might be in its lines.

  1. Put on your gloves and goggles.
  2. Remove the skimmer cover and open the container of chlorine and scoop out the granules. Manufacturers supply either a scoop or a measuring cup.
  3. Pour the chlorine into the skimmer, ensuring you’re reaching down as you pour. Do it gently so it doesn’t pour on your pool tiles.
  4. Now put back the skimmer cover and allow the pool to run for about three hours.

Can you put granular chlorine directly in the pool?

Adding granular chlorine to the pool is very simple and straight-forward.. You just have to measure the chemical, dissolve it in a bucket or a container, and add the mixture around the perimeter.

It is generally recommended that you do not add your granular chlorine directly into the skimmer or into the pool.

Kindly use a bucket and scoop water out of your pool. The water should reach at least half of the bucket. Then mix in the specified amount of chlorine granular.

You can follow the specified rules above to add the solution to the water.

How do you use granulated chlorine in a pool?

Chlorine is the most popular pool sanitizer. It’s known for its powerful ability to sanitize and completely eradicate bacteria in your pool. Chlorine comes in different forms; they are sticks, liquid, tablets, and granular chlorine.

Follow this procedure to add granular chlorine to your pool.

  1. Wear your protective gear: wear your gloves and glasses. If your pool is indoor, ensure that there’s enough ventilation before going ahead and opening a chemical container.
  2. Test your pool’s water levels to know the actual amount of chlorine granular to use. Do this by adding enough using a test strip or liquid test kit.
  3. Get a bucket and fetch water from your pool. Ensure it reaches half of the pool, then add water and mix it with the needed amount of granular chlorine. Use a stick to stir it appropriately.
  4. Turn on your pump and ensure it is running. You’d want the water to properly circulate everywhere in the pool.
  5. Now go on to adding your chlorine into the skimmer. Allow the water to run for at least three hours for proper circulation before going on to using it again.

Does chlorine dissolve in cold water?

Yes, chlorine is capable of dissolving in cold water, especially liquid chlorine. However, experts say that granular chlorine dissolves better in warm water, so it’s necessary to take note of this just in case you intend to dissolve chlorine.

Do take note that it is not advisable to add granular chlorine directly to the water. You must first add it through the skimmer before going on to add it to the pool and circulate it properly with the pump. Also, be careful not to let it pour on the tiles, as it has a tendency to bleach your pool tiles.

How many chlorine granules do I add to my pool?

Normally, you will need at least 3.5 quarts of granular chlorine per 10,000 gallons of water. You need to check the instructions on the manual from the manufacturer to know the accurate amount to actually one part per million change in your chlorine levels.

You can also test your water’s chemical levels to get an accurate amount of the level to which you’re to increase the chlorine in your water. This will help you know how much granular chlorine you need to raise your water’s chemical levels.

How do you know if there’s too much chlorine in the pool?

If the smell of the chlorine tends to be very strong, then that’s an indication of chlorine overdosing in your pool. Not just that, the eyes of swimmers will eventually turn red while using the pool when the chlorine level is high. Also, your skin might get irritated depending on your skin type.

To be sure that your water’s chemical levels are high, the best thing to do is to actually test your water. Use a liquid test kit or a test strip to actually confirm your chlorine level, pH level, and alkalinity. This is when you truly know. For sure, without doing any guesswork.

If you notice your chlorine levels are too low, the best thing to do is to begin treatment immediately, or else bacteria will begin to dwell.

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