LaMotte Pool & Spa Owner's Handbook - Manual (Page 31)

ADJUSTING ALKALINITY
It is recommended that dry chemicals first be mixed into a generous
amount of pool water in increments of about two pounds (1 kg), and the
predissolved mixture be distributed evenly around the pool unless directed
otherwise.
Precautions
n
Never add water to chemicals; always add chemicals to water.
n Always follow manufacturer’s recommendations and warnings
on product labeling.
n
Never mix two chemicals together since their pH might vary
and could cause an explosion or fire.
Alkalinity should be 80-120 ppm. Once you determine the alkalinity,
calculate how much you wish to raise or lower it and find this number
in the left-hand column. Match this with the volume of water in your pool
or spa, listed at the top of the table. Add the recommended amount to the
water in small increments. Since alkalinity adjustments affect pH, you
should test the alkalinity and pH 4-8 hours after the chemicals
are added.
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