Total Alkalinity (TA)
is the measure of bicarbonates, carbonates, hydroxides
and other alkaline substances found in pool water. Alkalinity is defined as the
ability of the water to resist changes in pH; also known as the buffering capacity
of the water, Alkalinity keeps the pH from “bouncing” all over the place. TA is
often confused with pH, which it affects. If TA is too low, the pH will be difficult to
maintain and may cause staining of pool surfaces. Total alkalinity should be in
the range of 90 – 130 ppm. Test pool water Total Alkalinity with a reliable Test Kit.
To raise total alkalinity, it is necessary to add pH buffer (Sodium Bicarbonate) at
the rate shown in the manufacturer’s instructions to reach the 90 – 130 ppm
range. 1.3kg of Sodium Bicarbonate raises 75,000L of pool water by 20 ppm.
To lower the total alkalinity, use Hydrochloric Acid (HCl). The acid demand chart
in your 4-in-1 Test Kit will indicate the necessary amount to add. Adjust as
needed until the reading (taken at least 24 hours later) is in the 90 – 130 ppm
range. When TA is correct, you may need to adjust pH.
Chlorine Test:
Test pool water chlorine level with a reliable Test Kit. Maintain
ideal range by adjusting the Oxygen production level. NOTE: Chlorine residual
above 5.0ppm may cause corrosion of pool metals and possible damage to
associated pool equipment. It is recommended that chlorine test samples be
taken from two places, one at the pool return line, the other well away from the
pool return line. Compare the samples. A higher level of chlorine should be found
at the pool return line, which confirms that the OXYGEN MINERALE system is
producing chlorine.
pH Level Test:
Test the pH level of your pool with a Test Kit. If necessary, adjust
according to your pool professional’s recommendations. A pH level of 7.2 - 7.6 is
recommended. Note: Never use dry acid to adjust pH in arid geographic areas
with excessive evaporation and minimal dilution of pool water with fresh water. A
build-up oyof byproducts can damage the electrolytic cell.
WATER CARE WEEKLY TESTS
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