DoseMyPool: Pool Calculator

Your targets now follow the same sources as dosemypool.com. Pools • Free chlorine shows a minimum and a target range for your CYA, from Trouble Free Pool's chart • Alkalinity 80 to 120 ppm and stabilizer (CYA) 30 to 50 ppm, from the Hayward and Pentair manuals, salt pools included • Calcium 200 to 400 ppm for plaster, 80 to 200 ppm for vinyl and fiberglass • Bromine 3 to 8 ppm • Pick your salt cell under Edit Pool to use its range: Hayward AquaRite 2,700 to 3,400 ppm or Pentair IntelliChlor 3,600 to 4,500 ppm • Shock Mode aims for 40% of your CYA, follows Trouble Free Pool's advice when CYA is under 30 or over 70, and finishes at 0.5 ppm combined chlorine or lower Hot tubs and swim spas • Free chlorine at least 3 ppm, and no more than 10 ppm while people are in the water • Bromine 4 to 8 ppm, pH 7.0 to 7.8, and no stabilizer (CYA), as the CDC recommends • Updated alkalinity and calcium ranges • The CDC's advice to test chlorine and pH twice a day The Fix It guides use the same numbers, and the Foamy Hot Tub Water guide now tells you when to drain and refill based on dissolved solids.