Freshwater Ag+™ Silver Ion Purifier ..................................38; Total Alkalinity; Calcium Hardness - HotSpring LANDMARK Owner's Manual

MAINTAINING THE SANITIZER LEVEL
A. Sanitizer is extremely important for killing algae, bacteria and viruses, and preventing unwanted organisms from
growing in the spa. At the same time, you don't want too high a sanitizer level, or it can irritate your skin, lungs and
eyes.
B. Always maintain the sanitizer level in your spa at the recommended level for each type of sanitizer.
C. Watkins recommends only the following sanitizers:
• FreshWater
• Sodium Dichloro-s-Triazinetrione (Sodium Dichlor or chlorine)
• Sodium Bromine with MPS
WARNING: DO NOT use tri-chlor chlorine, any type of compressed bromine or chlorine, acid or any type of sanitizer
which is not recommended by Watkins.
Refer to the following two sections to use either the FreshWater
sanitizer.
THE WATKINS WATER MAINTENANCE QUICK REFERENCE GUIDE
Steps

1 Total Alkalinity

2 Calcium Hardness 150

3 pH
4 Sanitizer
FRESHWATER
The FreshWater
non-chlorine shocking agent (potassium monopersulfate, also known as MPS),will sanitize the spa water.
Silver Ions are also introduced into your spa water by using the FreshStart
Additionally, Watkins highly recommends the use of the FreshWater
FreshWater
IMPORTANT: Remember to use MPS designed for use in spas, such as Hot Spring
shocking agents for swimming pools may contain chemicals incompatible with the FreshWater
as blue crystals in MPS). The recommended MPS should have an active ingredient content of 30% - 33%.
Water Quality and Maintenance
Silver Ion Purifier with potassium monopersulfate or potassium peroxymonosulfate (MPS)
Ag + ™
Ideal Range (ppm)
Minimum Maximum
125 150
200
7.4 7.6
See section on Maintaining the Sanitizer Level
Ag+™
Silver Ion Purifier used in conjunction with the addition of an aggressive oxidizer, such as a common
Ag + ™
Silver Ion Purifier.
Ag + ™
Page 38
Silver Ion Purifier or Sodium Dichlor as your
Ag + ™
What Chemicals to Use
To Raise
Sodium Bicarbonate Sodium Bisulfate
Calcium Hardness
Increaser
Sodium Carbonate
SILVER ION PURIFIER
™
10,000
®
II High Output Ozone System with the
To Lower
Use a mixture of
75% hard water
and 25% soft water
or use a Stain and
Scale Inhibitor
Sodium Bisulfate
Pre-filter when filling your spa.
®
Spa Shock. Other non-chlorine
Silver Ion Purifier (such
Ag + ™