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Untitled Document

Carbonate hardness

dKH -  
=    Parts per Million    =  Milliequivalents per liter 




Alkalinity Conversion
Here is a conversion table to help you convert from dKH, meq/l and ppm CaCO3.
The area highlighted is the recommended range for a reef aquarium.

dKH meq/l ppm CaCO3
0 0 0
0.5 0.18 8.9
1.0 0.36 17.9
1.5 0.54 26.8
2.0 0.71 35.7
2.5 0.89 44.6
3.0 1.07 53.6
3.5 1.25 62.5
4.0 1.43 71.4
4.5 1.61 80.4
5.0 1.79 89.3
5.5 1.96 98.2
6.0 2.14 107.1
6.5 2.32 116.1
7.0 2.50 125.0
7.5 2.68 133.9
8.0 2.86 142.9
8.5 3.04 151.8
9.0 3.21 160.7
9.5 3.39 169.6
10.0 3.57 178.6
10.5 3.75 187.5
11.0 3.93 196.4
11.5 4.11 205.4
12.0 4.29 214.3
12.5 4.46 223.3
13.0 4.64 232.1
13.5 4.82 241.1
14.0 5.00 250.0
14.5 5.18 258.9
15.0 5.36 267.9
15.5 5.54 276.8
16.0 5.71 285.7
16.5 5.89 294.6
17.0 6.07 303.6
17.5 6.25 312.5
18.0 6.43 321.4
18.5 6.61 330.4
19.0 6.79 339.3
19.5 6.96 348.2
20.0 7.14 357.1
20.5 7.32 366.1
21.0 7.50 375.0
21.5 7.68 383.9
22.0 7.86 392.9
22.5 8.04 401.8
23.0 8.21 410.7
23.5 8.39 419.6
24.0 8.57 428.6
24.5 8.75 437.5
25.0 8.93 446.4
carbonate ©
Sweet Shot or Not?




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