Shock dosing a swimming pool involves adding a large amount of chlorine or other chemical sanitizer to the water in order to quickly raise its chlorine level to a concentration high enough to kill bacteria, algae, and other contaminants. This process is also referred to as "superchlorination."
Regular shock dosing as part of routine maintenance (typically every 1-2 weeks) can help keep your pool water clear, safe, and pleasant to swim in. However, there may be other times when shock dosing is required such as;
Algae: If the pool has developed algae, a shock dose can help kill the algae and restore the water's clarity and safety.
High Bather Load: After a pool party or heavy usage, the sanitizer levels may be depleted. Shocking helps to quickly replenish chlorine levels and maintain water quality.
After Heavy Rain or Storms: Rain can introduce contaminants and dilute the pool's chlorine levels. Shocking ensures the water remains sanitized.
Start of the Season: When opening the pool for the season, a shock dose can help clean any accumulated contaminants and get the water ready for use.
Accidental Contamination: If the pool has been contaminated by bodily fluids, animals, or other foreign matter, shocking is essential to sanitize the water quickly.
If you need to shock dose you pool, here is our handy guide how:
Test the Water: Measure the current chlorine levels, pH, alkalinity, and calcium hardness of the pool water using a pool test kit or test strips. Adjust the pH to 7.2-7.6 for optimal shock efficiency.
Calculate the Amount of Shock Needed: Follow the instructions on the shock product to calculate the required amount based on your pool's volume.
Choose the Right Shock Product: There are different types of shock products, such as calcium hypochlorite, sodium di-chlor, potassium peroxymonosulfate (non-chlorine shock), and liquid chlorine. Choose one that suits your needs and the type of pool you have.
Pre-dissolve the Shock (if necessary): Some granular shock products require pre-dissolving in a bucket of water before adding to the pool to prevent the granules from settling on the pool floor and potentially causing damage. Always follow safety instructions on your chosen product.
Add the Shock to the Pool: Distribute the shock evenly around the pool, focusing on areas with good circulation.
Run the Pool Pump: Keep the pool pump and filter running for at least 8 hours to circulate the shock throughout the pool and ensure even distribution.
Wait and Retest the Water: Wait for the chlorine levels to drop to safe levels (usually below 5 ppm) before swimming. This can take 24-48 hours. Retest the water to ensure chlorine levels have returned to a safe range.
For assistance with routine pool care, repairs or refurbishment contact our expert team of engineers today on 01902670717 or info@ocean-pools.co.uk
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