LaMotte Pool & Spa Owner's Handbook - Manual (Page 26)

ADJUSTING pH
It is recommended that dry chemicals first be mixed into a generous
amount of 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.
A pH range of 7.2 - 7.8 is ideal for pools and spas. Since 7.5 is the
midpoint of this range, we have provided the tables below to help in
adjusting up or down to this pH. After testing the pH, find the pH in the
left hand column and match this with the volume of water in your pool
or spa, listed at the top of the table. Since the recommendations are
approximate, you may wish to initially add slightly less and wait 4-8 hours
to retest the water. Keep in mind that pH adjustments will affect
alkalinity.
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