What factors should be considered when testing pool water?
FACTORS
1
CHLORINE LEVELS
Test at least twice a week for daily pool use, and once a week for less frequent use Adjust chlorine based on chlorine-free levels.
2
SHOCKING A POOL
If combined chlorine is above 0 3 ppm, add 1015 times that amount in chlorine for shock treatment pH adjustment may be required before a shock treatment to make it effective
3
CYANURIC ACID (CYA)
Ideal ranges - indoor pools: 10-20 ppm, outdoor pools: 30-50 ppm, saltwater pools: 60-70 ppm Drain water to reduce high CYA levels
4
pH Level
Check along with chlorine Ideal range: 7 4-7 8 Adjust pH if necessary for effective chlorine use
5
ACID DEMAND TEST
If your pH is high, do not throw the sample away and use the acid demand reagen Use an acid demand reagent to calculate the required acid for pH balance
6
TOTAL DISSOLVED SOLIDS (TDS)
These are dissolved particulate matter, mainly salts, which are present in the water. Excess salts can affect sanitizing chemicals Monitor TDS levels.
7
TOTAL ALKALINITY
The alkaline substances here could be carbonates, bicarbonates, and hydroxides, among others. Test regularly, ideal range: 80120 ppm Can affect pH balance
8
SALINITY/SALT LEVELS
Check the amount of salts in the pool once in a month for a saltwater chlorine-generated pool The ideal salt levels are 2700–3400 ppm
9 METALS
Remove metals like iron, manganese, and copper to prevent staining on pool surfaces
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