Intex PureSpa SB-HSWF10 Owner's Manual page 23

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
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
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
Amount of Sodium Bicarbonate to raise Total Alkalinity
20 ppm
0.059 Lb
27 g
0.081 Lb 0.162 Lb
37 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
(353PO) SPA ENGLISH 7.5" X 10.3" PANTONE 295U 02/03/2023
100 ppm 120 ppm
0.448 Lb 0.528 Lb
202 g 238 g
0.614 Lb 0.737 Lb
279 g 335 g
100 ppm 120 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%)
40 ppm 60 ppm
0.118 Lb 0.178 Lb
53 g 80 g
0.244 Lb
74 g 111 g
290 gal (1098 L)
80 ppm 120 ppm
0.018 qt 0.038 qt
18 mL 36 mL
0.013 qt 0.026 qt
12 mL 22 mL
290 gal (1098 L)
80 ppm 120 ppm
0.047 Lb 0.095 Lb
21 g 43 g
0.032 Lb 0.064 Lb
14 g 29 g
353
English
PO
140 ppm
0.627 Lb
283 g
0.860 Lb
391 g
140 ppm
0.234 qt
223 mL
0.324 qt
308 mL
80 ppm
0.237 Lb
107 g
0.326 Lb
148 g
80 ppm
0.025 qt
24 mL
0.017 qt
16 mL
80 ppm
0.063 Lb
29 g
0.043 Lb
20 g
Page 23