Chlorine Consumption vs Water Temperature Calculator
Estimate how much extra chlorine your pool needs as water temperature rises. Calculate chlorine burn rate based on heat and organic load.
Why Temperature Matters
Chlorine is a chemical reactant. High temperatures speed up the chemical reactions between chlorine and organic matter (bacteria, sweat, oils, algae). For every 10ะยฐF increase in water temperature above 80ะยฐF, you can expect chlorine consumption to increase by approximately **25% to 50%**.
Pro Tip: Above 90ะยฐF, algae can double its population in just 3-6 hours if chlorine levels drop too low. Always check FC twice a day during heatwaves.
Frequently Asked Questions
Does hot weather evaporate chlorine?
Not exactly. It's the heat-induced reaction with contaminants and UV light from the sun that "uses up" the chlorine, rather than it evaporating like water.
Should I add stabilizer (CYA) in hot weather?
You should keep your CYA levels between 30-50 ppm regardless of temperature. CYA protects chlorine from UV rays, but it doesn't stop the increased consumption caused by heat-loving bacteria.
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