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Jack's Magic® After Shock™ Chlorine Reducer

Item #3011476


SHIPS TODAY if ordered in the next:

Reduce your swimming pool's chlorine level quickly with Jack's Magic® After Shock™.  After Shock™ is designed to work in conjunction with Stain Solution #1 for removal of iron, cobalt and spot-etching stains from pool surfaces without having to drain your pool.

If your stains are the result of high copper levels, utilize the After Shock™ with Stain Solution #2. After Shock™ will help reduce your swimming pool's chlorine level to below 1 ppm.

Note: Overdosing will make establishing a chlorine residual difficult following treatment. It is best to use smaller amounts with repeated additions.


  • 2 oz removes 1 ppm chlorine from 15,000 gallons of pool water

Directions for Use:

  1. Add 2 oz (¼ container) per 15,000 gallons to lower chlorine one ppm or bromine 2 ppm
  2. Run your pool filter continuously for a few hours while testing your water
  3. For swimming purposes, you want the level to read below 5 ppm before getting back into the water
  4. For stain removal, you may need a higher dose and read a level of 1 ppm for optimal performance

More Information
Brand Jack's Magic™
Weight .5 Lb

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