ControlOMatic SmarterSoa Installation & Operating Instructions Manual page 6

Estimated Salt per 100 Gallons (380 Liters) of Spa Water Estimated Salt per 100 Gallons (380 Liters) of Spa Water
Salt Type
Sodium Chloride Sodium Chloride
(NaCl) (NaCl)
Sodium Bromide Sodium Bromide
(NaBr) (NaBr)
The amount of salt to add depends on the size of the spa, which should be listed in your spa's manual. The amount of salt to add depends on the size of the spa, which should be listed in your spa's manual.
You can also estimate the size of your spa with an online spa volume calculator. You can also estimate the size of your spa with an online spa volume calculator.
Here are some examples, using sodium chloride (NaCl): Here are some examples, using sodium chloride (NaCl):
• • 350 gallons 350 gallons
• • 350 ÷ 100 (gallons) is 3.5 350 ÷ 100 (gallons) is 3.5
• • 3.5 × 2.5 (cups per 100 gallons) is 8.75 cups 3.5 × 2.5 (cups per 100 gallons) is
• • 1250 liters 1250 liters
• • 1250 ÷ 380 (liters) is 3.3 1250 ÷ 380 (liters) is 3.3
• • 3.3 × 2.5 (cups per 380 liters) is 8.25 cups 3.3 × 2.5 (cups per 380 liters) is
Simply pour the recommended amount of salt directly into the spa water to bring the concentration to
the recommended level, and turn the spa jets on to help mix it in. If the water is cold, it may take several
hours for the salt to fully dissolve.
Note: It may take the SmarterSpa a few hours to register the salt level the first time because of the salt
still dissolving into the water, so we recommend waiting before turning on the SmarterSpa.
Note: If there is too much salt, the SmarterSpa will shut down and display
and Salt Low) lights at the same time. When in doubt, start with less salt than you think you need,
since it is much easier to add more salt than it is to remove it, since removing it requires draining spa
water and adding fresh water. If you have a water softener, your water may already have some salt in
it, so in that case, before adding any salt to your spa, let the water get to temperature and then turn the
SmarterSpa on. That way, you can check the current level and gradually add salt in as needed.
Note: If you are trying to decide which salt you want to use, we typically recommend sodium chloride
(NaCl), since it is often more inexpensive, all while still being effective. If you have sensitive skin, sodium
bromide (NaBr) may be even more gentle than sodium chloride (NaCl) already is, so feel free to check
with your dermatologist for which option would be best for you.
SmarterSpa Manual SmarterSpa Manual
Salt Requirements (cont.) Salt Requirements (cont.)
Pounds Kilograms
1.5 1.5
2.5 2.5
8.75 cups
8.25 cups
Cups
0.7 0.7 2.5 2.5
1.1 1.1 4 4
Green
PPM
1500-2000 1500-2000
2500-3000 2500-3000
and Red (Salt High
6 6