How to deal with a over-chlorinated pool

The correct balance of chlorine in your swimming pool allows clean, safe and comfortable swimming. 

If a swimming pool has too much chlorine, it can be potentially harmful to the swimmers and the pool itself.

An over-chlorinated pool can fade and break down the swimming pool liner, corrode the filtration system and irritate swimmer’s eyes and skin.

It is important to test your pool water and maintain a proper chlorine balance to keep the pool safe and enjoyable.

What you’ll need

  • Pool strips
  • Sodium bisulfite

First, you’ll need to run your filter and wait it out. After testing your water. if you discover your chlorine level is high, run your filter eight to ten hours per day for two to three days and then test again.

If you are unable to wait days for the chlorine level to fall, add 133 or 170 grams of sodium bisulfite per 10,000 gallons of water to your pool. This is often sold as granular and is often labelled: PH- (pH minus). Run your filter eight to ten hours per day so to circulate the water and chemicals.

Lastly, you’ll need to test your water. Using the water testing strips, test the chlorine and pH levels. Too high pH indicates too much chlorine in the pool water; the optimal pH level is 7.3 to 7.5 and 1.0 to 3.0 is ideal for the chlorine reading.

Alternatively, Case Chemicals offer a range of pool chemicals to keep your pool safe and clean!