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Calculator

You'll need to know your Combined Chlorine reading in parts per million (PPM) before you can use the Shock Calculator. We recommend shocking with either Calcium Hypochlorite (un-stabalized granular only, not tablets) or with Liquid Chlorine (Sodium Hypochlorite).

gallons.

PPM.

I need to add this much to shock my pool/spa:

Toll Free: 800-969-0454

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