Size of Spa 485 gal, cartridge filter, above ground, fiberglass spa.
Free chlorine: below 0.6
Combined chlorine: below 0.6
bromine: below 1.3
PH: below 6.8
Acid Demand: below 638
otal alkalinity: 10 ppm
Free chlorine: below 0.6
Combined chlorine: below 0.6
bromine: below 1.3
PH: below 6.8
Acid Demand: below 638
otal alkalinity: 10 ppm