Chlorine Pool Shock: Use It Like a Pro!

Chlorine Pool Shock: Use It Like a Pro!

Shock chlorine, also known as rapid chlorine, restores optimal disinfection of your pool in a minimal amount of time. It will also be very useful at the opening of the season or when the pool turns green. Here is everything you need to know about this.

Why Is It Called "Shock" Chlorine?

In granular form, it has high chlorine content and high water solubility. It is the solubility of the product that gives it its name shock chlorine, or fast chlorine since its action is much faster than slow chlorine where dilution speed is lower.

Two Types of Shock Chlorine

  • Stabilized (dichloroisocyanurate): which contains a stabilizer (isocyanuric acid), that prevents chlorine deterioration by UV light.;
  • Unstabilized (calcium hypochloryte): much more unstable, it should be handled with care. It does not contain a stabilizer, so it is much more sensitive to the effects of the sun.

Chlorine Shock Treatment, When and Why?

Fast chlorine is to be used in addition to a basic treatment with slow chlorine tabs. It is advised to be used as a remedial treatment:

  • In the spring, after the winterization of your pool. Accompanied by thorough manual cleaning and continuous filtration.;
  • When the water in your pool becomes cloudy and the disinfection capacity of your water (ORP) is too low, do a shock treatment to quickly restore the situation.;
  • During hot weather, algae can grow in your pool, shock chlorination can solve this problem.;
  • After heavy use of the pool, to avoid any imbalance or bacteria growth.;
  • After outdoor pollution (storms, heavy rain, wildfires, etc.), a shock treatment can be considered in order to quickly restore the swimming water to its correct condition.

We have a dedicated article if you need more information.

User Guide

  • Measure and balance the pH of your pool before performing a shock treatment. A pH that is too high will considerably reduce the effect of the chlorine. So make sure your pH is between 7 and 7.4.
  • Start continuous filtration.
  • Calculate the quantity of product needed in relation to the dimensions of your pool. Usually, suppliers recommend adding 200g of stabilized fast chlorine per 10m3 of water. If you have the iopool application, simply follow the exact recommendations of the product to be added.
  • Dilute the shock powder in a bucket of warm water before spreading the mixture in your pool. This way, you will prevent the powder from settling on the bottom of the pool and ensure optimal diffusion.
  • Wait at least 1 to 2 hours before swimming.

The iopool Shimmer N' Shock

iopool offers very high quality, stabilized shock chlorine (99.7% active ingredient) in its range of cleaning products. You can order right here.

Post a comment

Please note, comments must be approved before they are published

iopool store

Shop the essentials

Regular price 229.00 EUR
Sale price 229.00 EUR
Regular price
Unit price
per 
Analyse Your Pool's Water with EcO Pool maintenance can be tedious. This is why our team decided to bring EcO to market. EcO is a smart, connected analyser that suits eather pools and hot-tubs. J...
Choose Options
25% Off
Regular price 49.00 EUR
Sale price 49.00 EUR
Regular price 64.95 EUR
Unit price
per 
Test Kit This Test Kit gives you access to custom pool care recommendations provided by iopool. Perfect for starting your pool's summer season. The package contains: 1 kg of pH+; 1 kg of pH-; 1 kg...
Regular price 19.95 EUR
Sale price 19.95 EUR
Regular price
Unit price
per 
Why use manual test strips Analysis strips allow you to test the various parameters of the quality of your water to provide your pool with the maintenance products needed. The results provided by t...
Regular price 99.00 EUR
Sale price 99.00 EUR
Regular price
Unit price
per 
Replacement module for the EcO probe Replacement "Sensor/Battery" block for the intelligent water monitor for real-time reporting of pool status and weather information; Built-in battery; Two seas...
Sold Out
Regular price 3.99 EUR
Sale price 3.99 EUR
Regular price
Unit price
per 
Why use the iopool spoon? A resistant white spoon for dosing iopool chemicals easily. Best way to do your product when you use the iopool app. Include with EcO Start-Pack and Test kit.
Regular price 49.99 EUR
Sale price 49.99 EUR
Regular price
Unit price
per 
Why use a Bluetooth speaker? Our Bluetooth speaker lets you stream your favorite music while you enjoy your pool. Waterproof and ready to use. Main advantages Waterproof; Enhanced bass; LED RGB li...
Regular price 4.99 EUR
Sale price 4.99 EUR
Regular price
Unit price
per 
EcO replacement cap The EcO cap allows you to replace the bottom part of your EcO probe if you have lost or damaged this part.
Regular price 209.00 EUR
Sale price 209.00 EUR
Regular price
Unit price
per 
Make A Great Deal  A repacked EcO has been repaired and tested. It comes with the same 2-year warranty than a brand new water analyser! This is thus an ecological and cost-effective option.  Get...
9% Off
Regular price 102.90 EUR
Sale price 102.90 EUR
Regular price 112.90 EUR
Unit price
per 
Composition This pack contains the essential chemicals for the disinfection of a "big" swimming pool with a volume bigger than 20m³. For your basic chlorine treatments and your specific shock chlor...
7% Off
Regular price 129.70 EUR
Sale price 129.70 EUR
Regular price 139.70 EUR
Unit price
per 
Composition This pack contains the essential chemicals for the disinfection of a "small" swimming pool with a volume smaller than 20m³. For your basic chlorine treatments and your specific shock ch...