Pool Volume & Chlorine Calculator

Chlorine dosing guide

• Daily maintenance: Keep free chlorine at 1-3 ppm. Liquid chlorine (10% sodium hypochlorite) adds ~1 ppm per 1 oz per 1,000 gal.
• Shock (regular): Raise to 10 ppm - about 10 oz of liquid shock per 1,000 gal, or 1 lb of cal-hypo (calcium hypochlorite) per 10,000 gal.
• Shock (algae/cloudy): Triple the regular shock dose. Run pump 24 hours, brush walls, vacuum settled debris next day.
• Test cyanuric acid: Keep CYA at 30-50 ppm in outdoor pools. Higher CYA neutralizes chlorine effectiveness.

Always add chlorine to water, not water to chlorine. Wear eye protection. Don't mix different shock types.