SPA WATER CHEMISTRY AND BALANCE (continued)
Lowering Total Alkalinity
Desired level
Volume:
210 gal / 795 L
Volume:
290 gal / 1098 L
Desired level
Volume:
210 gal / 795 L
Volume:
290 gal / 1098 L
Raising Total Alkalinity
Amount of Sodium Bicarbonate to raise Total Alkalinity
Desired level
Volume:
210 gal / 795 L
Volume:
290 gal / 1098 L
After the total alkalinity has been lowered to 120 ppm or raised to 80 ppm and the pH is still high or low, you
can adjust it using the following chart.
Lowering pH
Volume
Total Alkalinity
From→To
Volume
Total Alkalinity
From→To
S AVE THESE INSTRUCTIONS
(299IO) SPA (JET + BUBBLE) ENGLISH 7.5" X 10.3" PANTONE 295U 06/30/2016
Amount of Sodium Bisulfate to lower Total Alkalinity
60 ppm
80 ppm
0.269 Lb
0.358 Lb
121 g
161 g
0.368 Lb
0.492 Lb
168 g
224 g
Amount of Muriatic Acid to lower Total Alkalinity
60 ppm
80 ppm
0.101 qt
0.135 qt
96 mL
128 mL
0.139 qt
0.185 qt
132 mL
176 mL
20 ppm
40 ppm
0.059 Lb
0.118 Lb
27 g
53 g
0.081 Lb
0.162 Lb
37 g
74 g
pH Adjustment
Lowering pH Using Muriatic Acid
210 gal (795 L)
120 ppm
0.028 qt
8.4→7.2
26 mL
0.019 qt
7.8→7.2
18 mL
Lowering pH Using Sodium Bisulfate
210 gal (795 L)
120 ppm
0.071 Lb
8.4→7.2
32 g
0.047 Lb
7.8→7.2
21 g
100 ppm
120 ppm
140 ppm
0.448 Lb
0.528 Lb
0.627 Lb
202 g
238 g
0.614 Lb
0.737 Lb
0.860 Lb
279 g
335 g
100 ppm
120 ppm
140 ppm
0.169 qt
0.202 qt
160 mL
192 mL
0.232 qt
0.278 qt
220 mL
264 mL
(Muriatic acid: 31.45%)
60 ppm
80 ppm
0.178 Lb
0.237 Lb
80 g
107 g
0.244 Lb
0.326 Lb
111 g
148 g
290 gal (1098 L)
80 ppm
120 ppm
80 ppm
0.018 qt
0.038 qt
0.025 qt
18 mL
36 mL
0.013 qt
0.026 qt
0.017 qt
12 mL
22 mL
290 gal (1098 L)
80 ppm
120 ppm
80 ppm
0.047 Lb
0.095 Lb
0.063 Lb
21 g
43 g
0.032 Lb
0.064 Lb
0.043 Lb
14 g
29 g
299
English
A
283 g
391 g
0.234 qt
223 mL
0.324 qt
308 mL
24 mL
16 mL
29 g
20 g
Page 18