Low Total Alkalinity High Total Alkalinity Pitting concrete Plugged filters
Dissolve metals Reduced circulation
Staining of pool walls Cloudy pool water
pH bounce pH upward drift
Low Calcium Hardness High Calcium Hardness
Etching Plaster Plugged filters
Dissolve grout Reduced circulation
Pitting of concrete Cloudy pool water
Pitting of pool decks Inefficiency of heater
Low pH High pH
Pitting concrete Plugged filters
Dissolve metals Reduced circulation
Staining of pool walls Cloudy pool water
Chlorine loss increased Inefficiency of chlorine
Wrinkles vinyl liners Causes skin and eye irritation
Causes skin and eye irritation