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Should You Shock Your Pool Before Closing It?

should you shock your pool before closing it

Do I really need to shock my pool before closing it?

In most cases, yes! Shocking your pool before closing is an important part of preparing your water for the long winter ahead. It helps clean up contaminants left behind from the swimming season and prepares the water for months of sitting under the cover. Pool shock is designed to give your pool water a strong dose of sanitizer or oxidizer. Over the summer, your pool water collects things you may not even see, including:

  • Sweat and body oil
  • Sunscreen and lotions                                        
  • Leaves and organic debris
  • Bacteria and other contaminants

Even if your pool water looks clean and clear, there can still be unwanted contaminants in the water. Shocking the pool helps break down these contaminants and gives your sanitizer a fresh start before the pool is closed. Think of it like giving your pool a good deep clean before putting it to bed for the winter! Of course, shocking alone does not guarantee perfectly clear water in the spring. Proper water balance, winterizing products, and a correct closing procedure all work together to protect your pool.

Shop online at Pool Chemicals – Shocks & Oxidizers — Aqua-Tech.

a photo with blue pool water as the background, with cartoon graphics of different contaminants such as organics, phosphates, algae, and other wastes, labeled. a title on the upper righ hand side reads "the unseen enemies in your pool water!" with the subtitle "shock them out before you cover your pool for winter."

Shocking before closing can help:

  • Destroy unwanted contaminants
  • Break down organic waste in the water
  • Help prevent algae from getting a head start
  • Leave the water cleaner going into the winter
  • Make spring opening a little easier
a photo of an inground pool with very green water. there is a wooden fence in the background, and bench up against it on the left hand side. the hand railings of the pool ladder can be seen in the foreground going into the water. the water is very murky, and the bottom of the pool is not visible at all.

Every pool is different, and the products and steps needed for a proper closing can vary. Opening a pool that was closed properly takes a fraction of the time, effort, and chemical cost compared to opening a green, murky pool. Shop online here Pool Chemicals – Opening/Closing — Aqua-Tech, or in store for closing chemicals and kits.

If you have questions about shocking, balancing your water, or getting your pool ready for winter, Our Aqua-Tech team is happy to help you make sure your pool is properly prepared for the season ahead! Bring in a water sample to our water testing lab one week before closing, leaving you plenty of time to do any final balancing before shutting down the pool.

If you have any questions, reach our water lab!

Email: watertesting@aqua-tech.ca

Phone: 204-233-8822

Text: 204-817-8238

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