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Swimming Pool Contractors
DESIGN & BUILD
This could be because the chlorine or bromine level in the swimming pool water is low, or maybe the PH level is unbalanced
Chlorine tablets have stabiliser in them, they are designed as a slow release sanitiser and dissolve over a period of time.
Shock chlorine is, as the name suggests, designed to shock the water and kill the bacteria.
If the PH reading is below 7.2 then add PH increaser (sodium carbonate). If the PH is above 7.2 the add PH reducer (dry acid)
Stabiliser is cyanuric acid, it is added to protect the chlorine from uv, the recommended level is 30-50ppm.
TA stands for total alkalinity, it's a measurement of how much of the alkaline substances there are in water. The recommended level in pool water is 80-120ppm
The swimming pool filtration system should run for 8 hours a day, which is the time taken for the complete pool water to filter twice. But this will depend on bather load and weather conditions.