Free chlorine dose

PRO

Ounces of liquid chlorine (12.5%) to raise free chlorine.

Inputs

Result

Liquid chlorine
6.3 fl oz
Cups (8 fl oz)
0.8

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The formula

Liquid chlorine (12.5% sodium hypochlorite) raises FC by 10 ppm per ~10.5 oz per 10,000 gal.

Worked example

20,000 gal + 3 ppm = 6.3 fl oz liquid chlorine.

Frequently asked

How long before swimming?

Wait until FC is at target and pump has circulated 1 turnover.