Free chlorine dose
PROOunces of liquid chlorine (12.5%) to raise free chlorine.
Short answer: Liquid chlorine (12.5% sodium hypochlorite) raises FC by 10 ppm per ~10.5 oz per 10,000 gal. 20,000 gal + 3 ppm = 6.3 fl oz liquid chlorine. Enter your measurements above and the free chlorine dose returns the quantity, unit conversions and an estimated cost instantly, in imperial or metric — no sign-up needed.
What do you need to measure?
What is the answer?
Liquid chlorine
6.3 fl oz
Cups (8 fl oz)
0.8
How does the free chlorine dose work?
Liquid chlorine (12.5% sodium hypochlorite) raises FC by 10 ppm per ~10.5 oz per 10,000 gal.
What does a worked example look like?
20,000 gal + 3 ppm = 6.3 fl oz liquid chlorine.
What do people ask most?
›How long before swimming?
Wait until FC is at target and pump has circulated 1 turnover.
Which pool calculator should you use next?
Where can you learn more?
Read field notes on estimating and materials, or browse every calculator we make.
What should you read before you order materials?
Field notes from real jobs that explain the numbers behind this calculator.
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