Balanced water chemistry is as critical during the off-season months as it is in season. Water may become aggressive because of rain, snow, and fill water as with the regular use of acid to control pH. Adjust your pH and Carbonate Alkalinity frequently; monitor calcium hardness and cyanuric acid monthly.

Maintain the water chemistry using the Langelier Saturation Index (LSI) maintained between 0.0 and + 0.3.

?Free Chlorine = 1 to 3 ppm1   ?pH = 7.2 to 7.6                                ?Calcium hardness = 200 to 400 ppm1     ?Salt Level = 2500 to 3500 ppm1
? Total Chlorine = 1 to 3 ppm1   ?Carbonate Alkalinity = 80 to 120 ppm1   ?Cyanuric acid = 30 to 50 ppm1                   (Salt chlorination ONLY)
? Sequestering Agent as per Manufacturer�s directions                       ?TDS = 300 to 1800 ppm1 (Non-salt pools)

The Langelier Saturation Index (LSI) must be maintained between 0.0 and +0.3 for day-to-day maintenance after the initial start up procedure has been completed. This will help to reduce the likelihood of problems with the pool surface. Disregarding these LSI parameters promotes leaching, etching and discoloration on the negative (-) side and scaling and discoloration on the positive (+) side.

LANGELIER SATURATION INDEX (LSI) =
pH + Total Alkalinity Factor + Calcium Hardness Factor + Temperature Factor ?12.1
TDS 1 ?1000 ppm1 -12.1, TDS 1000 - 2000 ppm1 -12.2, TDS 2000+ ppm1 -12.3

Deterioration, discoloration and scaling as a result of the premature or improper use of chemicals and use of chemical feeders are the responsibility of the equipment installer and operator. Feeders other than Oxidation Reduction Potential (ORP) types and pH controllers should not be placed in operation for a minimum of 28 days after the start up.