Alkalinity Conversion Chart |
Alkalinity Conversion Chart | Conversion table between the three alkalinity units; dKH, meq/l and ppm CaCO3.
The recommended area zone for reef aquariums is shaded below. | 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 | | |
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