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SPA WATER CHEMISTRY AND BALANCE (continued)
Raising pH
Volume
Total Alkalinity
From→To
Use the included test strips to check the water hardness level and adjust it following below chart.
Lowering Calcium Hardness
If your household water supply is treated with a softener, mix the spa hard water with the soft water
according to the water volume ratio chart to lower the calcium hardness:
Initial level
Desired level:
100 ppm
Raising Calcium Hardness
If the calcium hardness level in the spa water is lower than 100 ppm, add calcium chloride into the spa
water.
Volume
m (CaCl
Muriatic acid is a caustic chemical and liquid solution of sodium bisulfate (NaHSO
is highly acidic. Handle all chemicals with care and wear extra personnel protective
equipment including goggle and gloves. It is very important not to splash acid onto
your skin or clothing, or into your eyes.
S AVE THESE INSTRUCTIONS
(299IO) SPA (JET + BUBBLE) ENGLISH 7.5" X 10.3" PANTONE 295U 06/30/2016
Raising pH Using Sodium Bicarbonate
210 gal (795 L)
120 ppm
0.541 Lb
0.361 Lb
6.8→7.2
243 g
Calcium Hardness Adjustment
Lowering Calcium Hardness Using Soft Water
1000 ppm
500 ppm
Water Volume Ratio (Vhard water:Vsoft water)
1:9
1:4
210 gal (795 L)
)
0.197 Lb
2
WARNING
290 gal (1098 L)
80 ppm
120 ppm
80 ppm
0.737 Lb
0.491 Lb
163 g
335 g
350 ppm
250 ppm
2:5
290 gal (1098 L)
89 g
0.269 Lb
299
English
A
224 g
2:3
122 g
)
4
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