Gunite Finish Supply

Pool Plastering, Pool Tiling and Pool Coping
Located in Hudson and serving surrounding areas Contact Us
Pool Skimmer
Pool Maintenance

Daily Water Chemistry & Maintenance

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.


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.

Failure to follow the manufacturer and/or applicator instructions and to control the LSI may cause deleterious effects, which are not the result of improper workmanship or a manufacturer's defect