Shocking a pool is a pool management process that you should understand and know how to carry it out. It is also referred to as super chlorination, and as the name suggests, it involves putting an excessive amount of chlorine into the pool water. This process sanitizes the swimming pool by killing bacteria and other organisms in the water as well as removing any contaminants that may be present in the water.
How to Shock Your Pool
Before shocking your swimming pool, you need to find out the volume of the pool as this will give you an idea of how much shock you will need. Make sure the water level is normal and its alkalinity is between 80-20 ppm and the pH is between 7.2-7.6. You also need to decide on the shock treatment, chlorine or non-chlorine.
Follow the instructions carefully when preparing the shock treatment as some types of shock will need to be dissolved. Be sure to pour the shock evenly throughout the pool for optimal results. While the shock will purge the water of contaminants and algae, it won’t remove them. So you need to run the filtration pump for 24 hours or more to clear the water.
When to Shock Your Swimming Pool
Besides regular maintenance, you should shock your pool when the temperature rises especially during summer. This is because algae, bacteria and other organisms thrive in warm water. High water temperatures also reduce the amount of free chlorine in the water. The free chlorine refers to the chlorine that is left unused and should not dip below 3 ppm.
You should also shock your pool after heavy rains as it can add contaminants and alter your pool’s pH. But before you shock, ensure that you have cleaned out the debris and brought the water level to normal. Rainwater is acidic and will likely change your pool’s alkalinity, so you need to adjust the alkalinity first before shocking the pool.
What Type of Shock to Use
Here are some of the shock treatments that you can use:
1.Calcium Hypochlorite is the most common and the cheapest pool treatment on the market. It also has a high chlorine content which makes it the best treatment for killing algae and sanitizing your pool. If you use it on a sunny day, it will burn off quickly due to its high chlorine content. This pool treatment is great for raising your pool’s pH and increasing the calcium levels.
2.Lithium Hypochlorite has the lowest chlorine percentage and will not change your pool’s pH and alkalinity. It is great if you don’t have to increase calcium levels.
3.Dichlor or granular chlorine contains 60% chlorine and cyanuric acid. The acid is meant to protect the chlorine from UV rays but it is recommended that you only use Dichlor when the sun isn’t out. It won’t affect your pool’s chemistry thanks to the neutral pH.