What is Pool Shock and Why is it Necessary
The following is general advice only. Requirements for individual pools and pool systems may vary.
Pool shock, also known as superchlorination, is a process that rapidly raises free chlorine levels in a pool to kill algae, bacteria, and other contaminants. Pool shocking is essential for maintaining a clean, healthy, and safe swimming environment.
Shock treatment is typically performed in the evening to minimise chlorine loss due to sunlight, and it's crucial to balance the pool's water chemistry before and after shocking to prevent issues like cloudy water or skin irritation.
Why is pool shock necessary?
Kills Algae and Bacteria:
Pool shock effectively destroys algae blooms, bacteria, and other microorganisms that can make the water unsafe or unappealing.
Removes Chloramines:
Chloramines are a byproduct of chlorine reacting with organic matter in the pool. Shock treatment helps break down these chloramines, improving water clarity and reducing chlorine demand.
Maintains Water Clarity:
By eliminating contaminants, pool shock helps keep the water clear and enjoyable for swimming.
Prevents Future Problems:
Regularly shocking the pool helps prevent future algae and bacteria growth, reducing the need for more extensive treatments later.
When to shock your pool?
After Heavy Usage:
Following a pool party or periods of heavy swimming, shock treatment can restore chlorine levels and combat increased organic matter.
After Stormy Weather:
Rain and wind can introduce debris and pollutants into the pool, making shock treatment necessary.
During Hot Weather:
Hot weather can increase algae and bacteria growth, so shock treatment helps keep the pool clean.
Before and After the Swimming Season:
Shocking the pool before opening for the season and after closing for the winter ensures it's clean and ready for use.
When Water Clarity Deteriorates:
If the water becomes cloudy or green, it's a sign that shock treatment is needed.
How to shock your pool?
The following steps are guidance only. Always follow the instructions outlined on your shock bag or bucket:
Prepare the pool: Ensure the pump is running, and the filter is clean.
Test the water: Check pH, alkalinity, and calcium hardness to ensure they are within the optimal range before adding shock.
Dissolve the shock: Use a bucket of water and mix the shock product until it's dissolved.
Add the shock: Pour the dissolved shock around the edges of the pool, ensuring it's distributed evenly.
Let the pump run: Allow the pump to run continuously for several hours to circulate the shock and allow it to break down contaminants.
Test the water again: After the shock treatment, retest the water to ensure the chlorine levels are within the desired range.
Important Considerations:
Sunlight: Avoid shocking during the day, as sunlight can break down the chlorine.
Water Balance: Adjust pH, alkalinity, and calcium hardness levels before and after shocking to prevent imbalances and potential issues.
Safety: Wear protective eyewear and gloves when handling pool chemicals.
Swimming: Avoid swimming in the pool for at least 24 hours after shocking to allow the chlorine levels to drop to a safe level.
Professional Advice: If you're unsure about shocking your pool, consult with a pool professional for guidance.
If you have any questions or queries, please contact our skilled team of technicians at WaterPro Pool and Spa on 1300 44 7665 or contact us.