Water Chemistry and Water Balance
Protecting the swimmers, bathers, users, the equipment and the vessel is the main job of water balance.
Chemicals alone will not produce safe, clear and pleasing water. The water must be effectively filtered and circulated. If the pump is too small for the pool, if the pump is not run long enough each day, if the filter is too small, if the filter is old, broken or is not functioning correctly, then water quality will suffer.
Filtration physically removes insoluble or suspended matter and other debris from the water. Circulation helps brings water to the filter and it assures that the chemicals that have been added are being dispersed and moved throughout the entire pool. It doesn’t help much if the chlorine in the water is in the shallow end while the bacteria and algae that need to be killed are in the deep end.
The pool end its equipment are best protected by maintaining water balance. In addition, balancing the water makes the most efficient use of the sanitizers, disinfectants and oxidizers that have been added.
There are 5 or may be 6 or 7 parameters or constituents involved in the water balance.
- Total Alkalinity
- Calcium Hardness
- TDS (Total Dissolve Solids)
- Cyanuric Acid (Conditioner or Stabilizer)
- Additional Buffers such as Borates (Sodium Tetraborate)
By “Water Balance” we mean keeping the water parameters within their proper ranges:
|Total Alkalinity||60 ppm||80-120 ppm||140 ppm|
|Calcium Hardness||150 ppm||200-400 ppm||500-1000 ppm|
|TDS||250 ppm||300-2000 ppm||2500 ppm|
|Cyanuric Acid||10 ppm||30-50 ppm||100 ppm|
|Borates (if used)||20 ppm||25-50 ppm||60 ppm|