Super Chlorinate

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Super chlorinate or superchlorination is the process of temporarily increasing the free chlorine levels in a swimming pool for the purpose of increased sanitation power. It's sometimes necessary when the pool is being used by a higher number of swimmers than usual or during times of significant rain that's caused the treated pool water to becoming diluted. 

super chlorinate

If you are a salt water pool owner you've probably seen the superchlorinate button on your chlorine generator. One of the many benefits of salt water systems is you have the ability to increase the chlorine production without needing to purchase chlorine or a shock treatment, with the push of a button. This means that if you know you are going to have an increased amount of swimmers in your pool or you develop cloudy pool water, all you have to do is press the button. 

You might be wondering what the super chlorinate feature does exactly or how often you need to use it. We'll explain what happens when you press the button go over how often you should be using the feature. Finally, we'll explain the similarity and differences between superchlorination and shocking. 



The Super Chlorinate Button

The superchlorinate button on a chlorine generator simply sets the chlorine output to 100% for a period of time, usually 24 hours or until the system is powered off. It's not quite that simple though because every generator has a maximum amount of chlorine it will produce in a 24 hour period. 

The chlorine generator size in relation to your pool is a huge factor in how effective the superchlorination feature will be at shocking the pool and clearing up cloudy water or mild algae. If your salt water system is sized properly you should be operating your chlorine output anywhere between 10 - 40%. If your generator is undersized and you are operating at 50 - 80% chlorine output on a daily basis you can see that simply boosting the output to 100% may not have the desired effect. 

The pump and filter system should be allowed to run for at least 24 hours after the superchlorination process has been initiated. 


How Often Should I Super Chlorinate?

The superchlorination booster feature is designed to be used when you need a temporary and gradual increase of free chlorine. This might be to combat increased harmful microorganisms that have been introduced to the pool water or it may also be needed when the water has been diluted due to heavy rainfall or after adding fresh water. 

The following are common reasons when superchlorination will likely be beneficial:

  • High bather load
  • Heavy rainfall
  • Cloudy water
  • Algae


Can I use the Super Chlorinate feature too much?

The simple answer is no because it's merely a temporary increase in chlorine that should keep harmful bacteria under control. There are a couple concerns if you do find that your free chlorine levels are consistently low. The first thing to keep in mind is the salt cell inside the chlorine generator has a shelf life and similar to a light bulb, the more it's used the fast it will wear out. 

The second concern is that if you are frequently needing to superchlorinate, your pool water may be imbalanced and need attention. It's important to stay on top of your pool maintenance program especially if you are experiencing consistent low chlorine, cloudy water or algae. Finally, you might just need to increase the output on your chlorine generator or the system may be undersized for the gallonage of your specific pool. 


Super Chlorinate vs Shock

Superchlorination and shocking are very similar because they both raise the levels of free chlorine, but they technically aren't the same. A pool shock raises the chlorine levels almost instantly to breakpoint chlorination, a very high level that's designed to eliminate chloramines and other harmful microorganisms. The superchlorinate feature raises chlorine levels gradually and at a much lower concentration, especially if your generator is already operating at 50% or higher of it's maximum output. 


How do I know whether to Shock or Superchlorinate?

The super chlorinate button should be used occasionally for the reasons mentioned above every week or two or as necessary. If you find that your chloramine levels have risen substantially and increasing the chlorine output on the generator isn't solving the problem, it might be a good idea to shock the water. 

The idea of a shock is a quick fix to give the chlorine and generator a boost to get back on top of the germ-fighting game. You will find that once you have truly shocked your pool to breakpoint chlorination, the generator will keep things running smoothly at the correct chlorine output. We often recommend a pool shock during springtime pool opening just for this reason. 


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