Chlorine (Sodium Dichlor) - HotSpring LANDMARK Owner's Manual

DOS AND DON'TS
• DO add MPS (or other approved sanitizing activator) prior to each use.
• DO shock the spa weekly with sanitizer (use either MPS or sodium dichlor).
• DO change the FreshWater
• DO test Total Alkalinity and pH weekly.
• DO use MPS for spas only.
• DO store the MPS in a tightly sealed container in a cool, dry place.
• DO shock the spa with chlorine at spa startup or refill.
• DON'T use bromine, sodium bromide or biguanides. These are an active sanitizer and will combine with the silver ions to inactivate
them.
• DON'T use a water clarifier. Clarifiers will cause the spa water to become cloudy.

CHLORINE (SODIUM DICHLOR)

A. Sanitizing chemicals, such as chlorine, are oxidants that kill bacteria and viruses in the water.
The Free Available Chlorine (FAC) is a measure of the amount of unused chlorine available to
sanitize the spa. The recommended FAC for your spa water is 3.0-5.0 ppm.
B. Watkins Manufacturing Corporation recommends the use of Sodium Dichlor type granulated
chlorine for sanitizing the water. Sodium Dichlor is preferred because it is totally soluble,
dissolves quickly and is nearly pH neutral.
C. Maintaining the proper level of chlorine during use is extremely important.
D. If the FAC is too low, bacteria and viruses can grow rapidly in the warm water. Increase the
FAC by adding granulated Sodium Dichlor.
E. If the FAC is too high, the water can cause discomfort to the user's eyes, lungs and skin.
Simply allow some time to pass. The FAC level will naturally drop over time.
F. When the Free Available Chlorine is within the recommended range, the spa is ready to be enjoyed.
WARNING: There are several forms of stabilized chlorine available for use in spas and swimming pools and each form has specific
chemical characteristics. It is extremely important that the one you choose is specifically designed for use in spas. Use of an incorrect
product such as tri-chlor, which has a very low pH (2.6), dissolves too quickly in hot water resulting in extremely high levels of chlorine,
and is designed for concrete or plaster swimming pools, WILL cause damage to your spa. Use of a liquid or concentrated form of
sanitizer WILL damage your spa and is specifically not covered under the terms of the limited warranty.
IMPORTANT: Granulated chlorine (Sodium Dichlor) will degrade if stored improperly. We recommend purchasing chlorine in one or two
pound containers and storing it in a cool, dry place to maintain its potency.
SUPER CHLORINATION
Super Chlorination is designed to "burn-off" the build-up of chloramines (used chlorine), to eliminate the chlorine smell and to allow the proper
level of free chlorine to be maintained.
When giving your water a super chlorination treatment, open the cover at least half way to allow the chlorine gas to vent off. The high
concentration of chlorine gas which may exist as a result of super chlorination (not daily sanitation) may eventually cause discoloration or
degradation to the bottom of the cover or the tile grouting, which would not be covered under the terms of your warranty.
IMPORTANT: Always allow the Free Available Chlorine to fall to 5 ppm before using your spa.
WARNING: Never leave an open spa unattended, especially if there are children present!
BUILDING A SANITIZER ROUTINE
During the first month of ownership, measure the sanitizer residual daily in order to establish standards for User Load and Usage Time versus
Sanitizer Needed.
• The User Load of the spa is the number of times anyone enters the spa.
• The Usage Time is simply the amount of time a user spends in the spa.
• Sanitizer Needed is the amount of Free Available Chlorine needed to accommodate the number of users and their combined usage
time.
For example, two spa users who regularly use the spa once an evening for twenty minutes create a specific and somewhat consistent
demand on the sanitizer. During the first month of ownership, these two users can determine exactly how much sanitizer to use in order to
maintain the proper residual. If, at any time, the user load and/or usage pattern changes dramatically (invited guests), the amount and
frequency of sanitizer required increases dramatically.
The greater the usage time or the bather load, the faster the residual value is diminished.
Silver Ion Purifier every 4 months.
Ag + ™
Page 41 Water Quality and Maintenance