How to Shock a Hot Tub With Chlorine Granules
Hot Tub Knowledge

How to Shock a Hot Tub With Chlorine Granules

Shocking a hot tub basically means adding a high amount of oxidizer to the water. The process is sometimes referred to as oxidizing. As a rule of thumb, you should shock your hot tub water once a week. It destroys impurities and controls bacteria. In this post, we are going to discuss how to shock a hot tub with chlorine granules. 

Why Shock a Hot Tub?

The main purpose of shocking a hot tub is to destroy impurities in the hot tub water. If the water looks cloudy, shocking is the best way to make it clear. Here are some of the reasons to shock a hot tub. 

To kill bacteria

The main purpose of chlorine-based shock treatment is to sanitize the water in a hot tub. By killing bacteria, it makes the water safe for you. Regular bacteria can cause discoloration. You might think that the pinkish stuff is rust, but it is not.

Pseudomonas Dermatitis, Legionella, and non-tuberculous mycobacteria are some disease-causing bacteria. Shocking the hot tub is a very effective way to kill all types of bacteria.

Remove organic contaminants

As you step into the water, you carry organic compounds that contaminate the water. When the hot tub is used by multiple bathers, there are lots of organic contaminants in the hot tub water. Higher levels of organic contaminants cannot be managed by standard sanitizers. In that case, you may need to use a chlorine-based shock treatment. 

Reactivate sanitizers

Whether you use chlorine or bromine, it will get mixed with various contaminants and gradually lose its sanitizing properties. When you use shock treatment, it reactivates the sanitizers by breaking the bonds. The filtration system then catches the contaminants. 

Chlorine shock

Chlorine granules are regularly used to shock hot tub water, and they are very effective. They powerfully and quickly destroy many different types of contaminants present in the hot tub water. The old chlorine sanitizer is then turned into a gas and this gas easily gets released into the air. 

However, there is a drawback of shocking a hot tub with chlorine granules. While chlorine granules are doing their work, they give off a very strong smell. This smell is very unpleasant and it can irritate your eyes. To avoid this problem, you can use shock treatment overnight. Here are the steps to using this shock treatment:

  • Take a bucket of water from the hot tub.
  • For 450 gallons of water, use 1 Oz of granules. 1 Oz of granules is roughly equal to one tablespoon. The point is to add the chemicals to the water and not the vice versa. 
  • Add the dissolved chlorine to the air bubbles jet.
  •  Let the air bubbles go for about an hour while keeping the cover off. After that, switch air bubbles off.
  • Remove the cover for about 20 minutes while the gases escape.
  •  Put the hot tub cover back again and leave it overnight. 

Make sure that the chlorine level is appropriate. Test the water with a test strip. 2 to 4 parts per million is the acceptable range. If the level is not appropriate, wait for about 30 minutes and test again.

Are you a hot tub owner wondering when to add chlorine to your tub. Here’s all you need to know concerning how often to add chlorine to your hot tub

Is Hot Tub Shock Dangerous?

If you want to learn how to shock a hot tub with chlorine granules, you also have to know whether it is safe. Hot tub shocks, when mixed with other chemicals, can be dangerous. Bromine or chlorine can be hazardous, and that is why you should store it in a cool and dry place. Make sure that children do not have access to the chemical. You may end up damaging the finish of your hot tub if you use too much of the chemical.

What About Non-chlorine Shock?

In recent years, many hot tub owners are showing interest in non-chlorine shock. The reason is simple. Chlorine is often associated with health issues. Non-chlorine shock may not be equally effective, but it is still an option. 

If you read some reviews on Amazon and Walmart, you will notice that all users are not satisfied with non-chlorine shock. Some users even say that it is completely ineffective. For example, Oxy Spa Non-chlorine Hot Tub Shock does not work, and it makes the water yellow and slimy. 

However, if your skin is sensitive and you do not want to use chemicals you can still try non-chlorine shock. In your case, it can be an alternative. You have to make sure that the pH levels are appropriate. 

The main advantage of a non-chlorine shock is that you do not have to use chemicals like bromine or chlorine in your water. Your non-chlorine shock will obviously work if you are willing to work a bit harder. 

Nature 2spa Mineral Stick is a Mineral Sanitizer that works very well. If you have a rigid hot tub, this is the perfect product to use. 

Frequently Asked Questions About Hot Tub Shock

Now you know how to shock a hot tub with chlorine granules. But we guess you still have some questions. Now we are going to answer some of the most frequently asked questions regarding hot tub shock.

How frequently should I do it?

There is no straight answer to this question. It depends on how frequently and how heavily you use the hot tub. You have to measure the sanitizer level before you apply a hot tub shock. Testing the water is the most obvious way to know whether you should shock a hot tub. When you buy shock chemicals, read the manufacturer’s instructions.   

Hot tub owners want to learn how to shock a hot tub with chlorine granules. But they also should know how frequently they should do it. As a rule of thumb, you should do it once a week. But if a hot tub is always being used, you have to do it more frequently. Test the water to make sure that the pH level is correct.

When should I shock my hot tub?

You can shock the hot tub anytime if the hot tub is indoors. But if it is under the open sky, you may need to wait until night. It is important to remember that the sun’s rays can make chlorine ineffective.

Are there different forms of chlorine?

When it comes to choosing chlorine, you have several different options. Sodium dichlor granules are very common. This is also a very effective form of chlorine. You do not need to use an additional stabilizer because sodium dichlor is pH neutral. It retains its stability in high temperatures.

Can I use salt chlorine?

Salt chlorine is not a bad choice, and it is often used as an alternative. There are devices that are used to turn mineral salts into chlorine. Installation of the device does not require any modification of your hot tub.

How to Shock a Hot Tub With Chlorine Granules – Conclusion

The procedure of using chlorine granules as a hot tub shock is pretty easy, and you can do it even if you have never used them. For shocking a hot tub, the most important thing is to know when to do it. Now you know how to shock a hot tub with chlorine granules, and hopefully, you will keep your hot tub functional.