4
Onzen Technical Guide
TERM
DEFINITION
Potential Hydrogen
(pH)
The pH level is the measure of alkalinity.
Maintaining a Balanced pH level is extremely important for:
· Optimizing the effectiveness of the sanitizer.
· Maintaining water that is comfortable for the user.
· Preventing equipment deterioration.
· Note: Salt systems naturally drive pH levels to increase, strive
to achieve a Balanced pH level.
If the spa water’s pH level is too low, the following may result:
· The sanitizer will dissipate rapidly.
· The water may become irritation to spa users.
· The spa’s equipment may corrode.
Low pH
can be raised by adding Arctic Pure, Adjust Up to the spa water.
If the pH level is too high, the following may result:
· The sanitizer is less effective.
· Scale will form on the spa shell surface and the equipment.
· High pH will cause calcium to precipitate (fall out of suspension).
· The water may become cloudy.
High pH can be lowered by adding Arctic Pure, Adjust Down to the spa water.
It is important to check the pH on a regular basis. The pH will be affected by the
bather load, the addition of new water, the addition of various chemicals, and the
type of sanitizer used.
Chlorine
Free Chlorine (FCL)
FCL is the active form of chlorine that actually kills bacteria and algae (It is a
Sanitizer).
Sanitizer is extremely important for killing algae, bacteria and viruses, and
preventing unwanted organisms for 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.
Always maintain the sanitizer level in your spa at the recommended level for each
type of sanitizer.
Chlorine Residual
The actual level of chlorine in the water after the chlorine demand has been satisfied.
Sanitizer
Chemical used to kill bacteria.
Generic names: Chlorine, Bromine.
Arctic Pure, Boost or Refresh.
