WATER CHEMISTRY TERMS
YOU SHOULD KNOW
8. Total dissolved solids (TDS): Materials that have been dissolved by the water. i.e. Like what hap-
pens when you put sugar in coffee or tea.
9. Useful life of water (in days): Water should be drained at least once every 180 days.
Useful life may vary by usage and bather load.
10. Defoamer: Foaming may be caused by body oils, cosmetics, lotions, surface cleaners, high pH or
algeacides as well as other organic materials. Low levels of calcium or sanitizer can also cause
foaming. Also, double rinse your bathing suits as they will hold residual soap after being washed.
11. Calcium hardness: Water that is too hard (over 250 ppm) can promote scale formation in
components and on swim spa surface. Water that is too low (below 180 ppm) may also shorten
the life of metal components on the swim spa.
NOTE: Always leave swim spa cover open for 15 min. after addnig chemicals to prevent off gas from
damaging your cover, pillows and other critical parts.
21
DO NOT DIVE.
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