To start up a salt
generator the usual level of salt in the water is 2500 to 3000 ppm. In a 10,000 gallon pool that would be about 200 to 250
lbs of salt. A 25,000 gallon pool would need more than 500 lbs. Always test the water for salt before adding more salt.
The type of salt to use is granulated, evaporated, non-iodized salt. Be careful,
many salt products contain tricalcium phosphate to
prevent caking. It's insoluble and ends up on the bottom or in the filter.
Watch out for iodine. Do not use rock salt or water conditioner salt.
The salt makes chlorine (technically HOCl, the killing
form of chlorine and OCl-, the fairly inactive form)
and sodium hydroxide and hydrogen gas. When the chlorine is used in oxidation,
it becomes chloride. The chloride is recycled back to chlorine. In a perfect
world, you would only have to add chloride (salt) once. However, some reactions
of chlorine with organic material tie up or use up the chlorine making it
unavailable to be recycled. Therefore, the water must be tested periodically to
make sure the salt content is OK.
Most units are capable of making about a pound of pure chlorine per day (if run
24 hours). One pound of chlorine in 10,000 gallons of water would be 12 ppm.
The
chloride (Cl) portion of NaCl
is .606731. Therefore, the 5,000 ppm NaCl is 3,033.655 ppm Cl and 1,966.345. Na.
Pool Size in gallons (US)
|
Salt Amount Before
Addition |
|
|
|
|
|
|
|
|
|
|
|
|
0.00 gpl |
250 lbs |
300 lbs |
350 lbs |
400 lbs |
450 lbs |
500 lbs |
550 lbs |
600 lbs |
650 lbs |
700 lbs |
750 lbs |
|
0.20 gpl |
230 lbs |
280 lbs |
325 lbs |
370 lbs |
420 lbs |
465 lbs |
510 lbs |
560 lbs |
605 lbs |
650 lbs |
700 lbs |
|
0.40 gpl |
215 lbs |
260 lbs |
305 lbs |
345 lbs |
390 lbs |
435 lbs |
475 lbs |
520 lbs |
565 lbs |
605 lbs |
650 lbs |
|
0.60 gpl |
200 lbs |
240 lbs |
280 lbs |
320 lbs |
360 lbs |
400 lbs |
440 lbs |
480 lbs |
520 lbs |
560 lbs |
600 lbs |
|
0.80 gpl |
185 lbs |
220 lbs |
255 lbs |
290 lbs |
330 lbs |
365 lbs |
400 lbs |
440 lbs |
475 lbs |
510 lbs |
550 lbs |
|
1.00 gpl |
165 lbs |
200 lbs |
230 lbs |
265 lbs |
300 lbs |
330 lbs |
365 lbs |
400 lbs |
430 lbs |
465 lbs |
500 lbs |
|
1.20 gpl |
150 lbs |
180 lbs |
210 lbs |
240 lbs |
270 lbs |
300 lbs |
330 lbs |
360 lbs |
390 lbs |
420 lbs |
450 lbs |
|
1.40 gpl |
130 lbs |
160 lbs |
185 lbs |
210 lbs |
240 lbs |
265 lbs |
290 lbs |
320 lbs |
345 lbs |
370 lbs |
400 lbs |
|
1.60 gpl |
115 lbs |
140 lbs |
165 lbs |
185 lbs |
210 lbs |
235 lbs |
255 lbs |
280 lbs |
305 lbs |
325 lbs |
350 lbs |
|
1.80 gpl |
100 lbs |
120 lbs |
140 lbs |
160 lbs |
180 lbs |
200 lbs |
220 lbs |
240 lbs |
260 lbs |
280 lbs |
300 lbs |
|
2.00 gpl |
85 lbs |
100 lbs |
115 lbs |
135 lbs |
150 lbs |
165 lbs |
185 lbs |
200 lbs |
215 lbs |
235 lbs |
250 lbs |
|
2.20 gpl |
65 lbs |
80 lbs |
95 lbs |
105 lbs |
120 lbs |
135 lbs |
145 lbs |
160 lbs |
175 lbs |
185 lbs |
200 lbs |
|
2.40 gpl |
50 lbs |
60 lbs |
70 lbs |
80 lbs |
90 lbs |
100 lbs |
110 lbs |
120 lbs |
130 lbs |
140 lbs |
150 lbs |
|
2.60 gpl |
30 lbs |
40 lbs |
45 lbs |
55 lbs |
60 lbs |
65 lbs |
75 lbs |
80 lbs |
85 lbs |
95 lbs |
100 lbs |
|
2.80 gpl |
15 lbs |
20 lbs |
20 lbs |
25 lbs |
30 lbs |
30 lbs |
35 lbs |
40 lbs |
40 lbs |
45 lbs |
50 lbs |
Pounds of Chlorine Stabilizer (Cyanuric
Acid) Needed to Obtain 75 PPM
Pool Size in gallons (US)
|
Stabilizer Level
Before Addition |
|
|
|
|
|
|
|
00 PPM |
6.25 lbs. |
7.50 lbs. |
8.75 lbs. |
10.0 lbs. |
11.25 lbs. |
12.5 lbs. |
|
10 PPM |
5.40 lbs. |
6.50 lbs. |
7.60 lbs. |
8.60 lbs. |
9.75 lbs. |
10.8 lbs. |
|
20 PPM |
4.60 lbs. |
5.50 lbs. |
6.40 lbs. |
7.30 lbs. |
8.25 lbs. |
9.20 lbs. |
|
30 PPM |
3.75 lbs. |
4.50 lbs. |
5.25 lbs. |
6.00 lbs. |
6.75 lbs. |
7.50 lbs. |
|
40 PPM |
2.90 lbs. |
3.50 lbs. |
4.00 lbs. |
4.60 lbs. |
5.25 lbs. |
5.80 lbs. |
|
50 PPM |
2.00 lbs. |
2.50 lbs. |
2.90 lbs. |
3.30 lbs. |
3.75 lbs. |
4.10 lbs. |
|
60 PPM |
1.25 lbs. |
1.50 lbs. |
1.75 lbs. |
2.00 lbs. |
2.25 lbs. |
2.50 lbs. |
|
70 PPM |
0.40 lbs. |
0.50 lbs. |
0.60 lbs. |
0.66 lbs. |
0.75 lbs. |
0.80 lbs. |
|
75 PPM |
None |
None |
None |
None |
None |
None |
|
Stabilizer Level
Before Addition |
|
|
|
|
|
|
00 PPM |
13.75 lbs. |
15.0 lbs. |
16.25 lbs. |
17.5 lbs. |
18.75 lbs. |
|
10 PPM |
11.9 lbs. |
12.9 lbs. |
14.0 lbs. |
15.2 lbs. |
16.25 lbs. |
|
20 PPM |
10.0 lbs. |
10.9 lbs. |
11.9 lbs. |
12.8 lbs. |
13.75 lbs. |
|
30 PPM |
8.25 lbs. |
9.00 lbs. |
9.75 lbs. |
10.5 lbs. |
11.75 lbs. |
|
40 PPM |
6.40 lbs. |
6.90 lbs. |
7.58 lbs. |
8.20 lbs. |
8.75 lbs. |
|
50 PPM |
4.60 lbs. |
4.90 lbs. |
5.40 lbs. |
5.80 lbs. |
6.25 lbs. |
|
60 PPM |
2.75 lbs. |
3.00 lbs. |
3.25 lbs. |
3.50 lbs. |
3.75 lbs. |
|
70 PPM |
0.90 lbs. |
1.00 lbs. |
1.10 lbs. |
1.20 lbs. |
1.25 lbs. |
|
75 PPM |
None |
None |
None |
None |
None |
Tip:
Add 1 1/4 lbs. Of Chlorine Stabilizer
every time you need to add 50 lbs. of salt to the pool. The Chlorine Stabilizer
reading should be maintained at 75 PPM