Pool Chemical Balance: The Numbers Every Pool Owner Should Know
August 31, 2026 · 6 min read Balanced water protects three things: swimmers, plaster, and equipment. Miss the targets and you get itchy eyes, scale, staining, and a shortened heater life.
Part of our Pool Chemical Balancing service.
Target levels
Free chlorine: 2 to 4 ppm (Florida sun pushes you toward the top of that range).
pH: 7.4 to 7.6.
Total alkalinity: 80 to 120 ppm — this is what keeps pH from bouncing.
Calcium hardness: 200 to 400 ppm.
Cyanuric acid (stabilizer): 30 to 50 ppm for chlorine pools, 60 to 80 for salt.
Phosphates: as low as practical — high phosphates feed algae.
Fix alkalinity before pH
Alkalinity is the buffer. If it is out of range, pH will not hold no matter how much acid you add. Correct alkalinity first, let it circulate a full day, then re-test pH.
How often should you test and clean a pool?
In Pinellas County, test twice a week in summer and weekly in winter. Brush and skim weekly, empty baskets weekly, and clean the filter roughly every three to four months or when pressure rises 8 to 10 psi over clean.
After a Florida storm
Heavy rain dilutes stabilizer and chlorine while adding organics. Test the day after any big storm, shock if free chlorine is under 1 ppm, and run the pump longer than usual for 48 hours.
Ready to move forward? See our Pool Chemical Balancing service
Written by the Skeet's Pool Service team.