Adjusting
Total Alkalinity (TA): The
ideal ranges are:
- 30-90 PPM for
Cleanwater BlueTM system
- 80-120 PPM for
Bromine or Nature 2 systems
If TA is low, add Alkalinity Increaser until a TA reading
near the upper end of the appropriate PPM acceptable
range is reached.
If TA is high, add pH
Decrease until a reading near the upper end of the
appropriate PPM acceptable range is attained.
Notes: TA which
is on the high side is less of a problem than TA which
is bit too low. Make sure to allow time for the
adjusting chemicals to equilibrate in the spa water before taking measurements. In
the case of stubbornly high pH/TA which is not
responsive to pH Decrease, try  Acid
Magic.
Adjusting
pH: The
ideal range is 7.2 - 7.6 per diagram above (see  pH
Range)
Now check for proper pH
level. Adjusting TA will very often bring pH
into line.
If below 7.2, add more Alkalinity Increaser until a reading of
about 7.4 is reached. pH Increase, which is
stronger, may also be
used, especially if both pH and TA are very low, but
keep in mind that both pH Increase and Alkalinity Increaser will
also raise TA, so if TA is already high, you should
use Easy pH, which will significantly raise
only the pH.
If pH is above 7.8, add pH
Decrease until a reading of about 7.6 is reached.
Once pH adjustments
have been made, you can lock pH into perfect balance
by adding Control the pH*. Often no need for further
adjustments until the next water change! (*Not
compatible with Cleanwater BlueTM).
Remember: pH which is a little on the high side is much
less of a problem than pH which is too low (acidic).
Low pH causes harmful corrosion; high pH can
contribute to scale formation, but that is much less
of a problem than corrosion. Properly balanced
water will also have a better feel on the skin and
allow your sanitizer to perform. |
Prepare
Hot Tub 
Repeat with each spa water change, or every 60-90 days.
