|
|
| The
calcium hardness reading indicates the amount of dissolved calcium
in pool water. The ideal range for calcium is between 200
and 300. |
| |
|
|
|
| Proper
Calcium Ranges: |
|
|
|
| Pool
Type |
Range |
|
|
| Plaster Pools |
200-400 |
|
|
| Vinyl and other
types of pools |
175-300 |
|
|
|
| |
| Results
when calcium hardness is out of balance: |
| Calcium
levels are too LOW: |
| - Etches plaster. |
| - Increases corrosion
to pool. |
| - Shorter plaster
life. |
| - Shorter vinyl
life. |
| - Rough plaster. |
| - Minute pores
for algae roots. |
| |
| Calcium
levels are too HIGH: |
| - Scale forming
on all surfaces. |
| - Pool circulation
is reduced when scales form on pipes. |
| - Causes heater
scale. |
| - Discolors plaster. |
| - Rough surface
(hard to clean). |
| |
| Adjusting
Calcium Hardness: |
| To INCREASE, use
Orca Pacific's Calcium Increaser. |
| To LOWER, dilute
with FRESH water. |
| |
| Note:
Calcium Hardness can increase initially 50 to 75 ppm in newly
plastered pools, as plaster cures. |
| |
| Increasing
Calcium Hardness with Calcium Chloride in a SWIMMING POOL |
|
ppm
Increase Desired
|
10,000
gal.
|
25,000
gal.
|
50,000
gal.
|
75,000
gal.
|
100,000
gal.
|
200,000
gal.
|
500,000
gal.
|
750,000
gal.
|
1,000,000
gal. |
| |
pounds.oz |
pounds.oz |
pounds.oz |
pounds.oz |
pounds.oz |
pounds.oz |
pounds.oz |
pounds.oz |
pounds.oz |
| 10 |
1.4
|
3.2
|
6.4
|
9.6
|
12.8
|
25.0
|
62.8
|
93.12
|
125.0 |
| 20 |
2.8
|
6.4
|
12.8
|
18.12
|
25.0
|
50.0
|
125.0
|
187.8
|
250.0 |
| 30 |
3.12
|
9.6
|
18.12
|
28.2
|
37.8
|
75.0
|
187.8
|
281.4
|
375.0 |
| 40 |
5.0
|
12.8
|
25.0
|
37.8
|
50.0
|
100.0
|
250.0
|
375.0
|
500.0 |
| 50 |
6.4
|
15.10
|
31.4
|
46.14
|
62.8
|
125.0
|
312.8
|
468.12
|
625.0 |
| 60 |
7.8
|
18.12
|
37.8
|
56.4
|
75.0
|
150.0
|
375.0
|
562.8
|
750.0 |
| 70 |
8.12
|
21.14
|
43.12
|
65.10
|
87.8
|
175.0
|
437.8
|
656.4
|
875.0 |
| 80 |
10.0
|
25.0
|
50.0
|
75.0
|
100.0
|
200.0
|
500.0
|
750.0
|
1000.0 |
| 90 |
11.4
|
28.2
|
56.4
|
84.6
|
112.8
|
225.0
|
562.8
|
843.12
|
1125.0 |
| 100 |
12.8
|
31.4
|
62.8
|
93.12
|
125.0
|
250.0
|
625.0
|
937.8
|
1250.0 |
| 150 |
18.12
|
46.14
|
93.12
|
140.10
|
187.8
|
375.0
|
937.8
|
1406.4
|
1875.0 |
| 200 |
25.0
|
62.8
|
125.0
|
187.8
|
250.0
|
500.0
|
1250.0
|
1875.0
|
2500.0 |
| Note:
pt = one pint (16 fl oz) qt = one quart (32 fl oz) gl = one gallon
(128 fl oz) |
| |
| Increasing
Calcium Hardness with Calcium Chloride Pels 94% - 97% in a SPA |
|
| ppm
increase desired |
100
gal. |
150
gal. |
250
gal. |
500
gal. |
750
gal. |
1000
gal. |
| 10 |
1 1/4 ts
|
2 ts
|
1 tb
|
2 tb
|
3 tb
|
1/4 cp |
| 20 |
2 1/2 ts
|
4 ts
|
2 tb
|
1/4 cp
|
1/3 cp
|
1/2 cp |
| 30 |
1 1/4 tb
|
2 tb |
3 tb
|
1/3 cp
|
2/3 cp
|
3/4 cp |
| 40 |
4 ts
|
2 1/2 tb
|
1/4 cp
|
1/2 cp
|
3/4 cp
|
1 cp |
| 50 |
2 tb
|
3 tb
|
5 tb
|
2/3 cp
|
1 cp
|
1 1/3 cp |
| 60 |
2 1/2 tb
|
1/4 cp
|
1/3 cp
|
3/4 cp
|
1 1/4 cp
|
1 1/2 cp |
| 70 |
3 tb
|
1/4 cp
|
1/3 cp
|
3/4 cp
|
1 1/3 cp
|
1 3/4 cp |
| 80 |
3 1/2 tb
|
1/3 cp
|
1/2 cp
|
1 cp
|
1 1/2 cp
|
2 cp |
| 90 |
1/4 cp
|
1/3 cp
|
1/2 cp
|
1 cp
|
1 2/3 cp
|
2 1/3 cp |
| 100 |
1/4 cp
|
1/2 cp
|
2/3 cp
|
1 1/3 cp
|
2 cp
|
2 1/2 cp |
| Note:
ts = teaspoon, tb = tablespoon, cp = one cup (8 fl oz) |
| |
|
| |
