Description

This article is from the ReefKeepers FAQ, by several authors (see the Credits section).

9.0 Useful Tables

Temperature

   C      F  
 20.00  68.00
 20.20  68.36
 20.40  68.72
 20.60  69.08
 20.80  69.44
 21.00  69.80
 21.20  70.16
 21.40  70.52
 21.60  70.88
 21.80  71.24
 22.00  71.60
 22.20  71.96
 22.40  72.32
 22.60  72.68
 22.80  73.04
 23.00  73.40
 23.20  73.76
 23.40  74.12
 23.60  74.48
 23.80  74.84
 24.00  75.20
 24.20  75.56
 24.40  75.92
 24.60  76.28
 24.80  76.64
 25.00  77.00
 25.20  77.36
 25.40  77.72
 25.60  78.08
 25.80  78.44
 26.00  78.80
 26.20  79.16
 26.40  79.52
 26.60  79.88
 26.80  80.24
 27.00  80.60
 27.20  80.96
 27.40  81.32
 27.60  81.68
 27.80  82.04
 28.00  82.40
 28.20  82.76
 28.40  83.12
 28.60  83.48
 28.80  83.84
 29.00  84.20
 29.20  84.56
 29.40  84.92
 29.60  85.28
 29.80  85.64
 30.00  86.00

Alkalinity

 meq/l   ppm     KH 
        CaCO3       
 0.00    0.00   0.00
 0.05    2.50   0.14
 0.10    5.00   0.28
 0.15    7.50   0.42
 0.20   10.00   0.56
 0.25   12.50   0.70
 0.30   15.00   0.84
 0.35   17.50   0.98
 0.40   20.00   1.12
 0.45   22.50   1.26
 0.50   25.00   1.40
 0.55   27.50   1.54
 0.60   30.00   1.68
 0.65   32.50   1.82
 0.70   35.00   1.96
 0.75   37.50   2.10
 0.80   40.00   2.24
 0.85   42.50   2.38
 0.90   45.00   2.52
 0.95   47.50   2.66
 1.00   50.00   2.80
 1.10   55.00   3.08
 1.20   60.00   3.36
 1.30   65.00   3.64
 1.40   70.00   3.92
 1.50   75.00   4.20
 1.60   80.00   4.48
 1.70   85.00   4.76
 1.80   90.00   5.04
 1.90   95.00   5.32
 2.00  100.00   5.60
 2.10  105.00   5.88
 2.20  110.00   6.16
 2.30  115.00   6.44
 2.40  120.00   6.72
 2.50  125.00   7.00
 2.60  130.00   7.28
 2.70  135.00   7.56
 2.80  140.00   7.84
 2.90  145.00   8.12
 3.00  150.00   8.40
 3.10  155.00   8.68
 3.20  160.00   8.96
 3.30  165.00   9.24
 3.40  170.00   9.52
 3.50  175.00   9.80
 3.60  180.00  10.08
 3.70  185.00  10.36
 3.80  190.00  10.64
 3.90  195.00  10.92
 4.00  200.00  11.20
 4.20  210.00  11.76
 4.40  220.00  12.32
 4.60  230.00  12.88
 4.80  240.00  13.44
 5.00  250.00  14.00
  (1)   (50)   (2.8)  

Nitrogen as Ammonia, Nitrite, Nitrate

   N       N     NH3    NO2    NO3  
  ppm    uM/l    mg/l   mg/l   mg/l 
  0.000   0.000  0.000  0.000  0.000
  0.005   0.357  0.006  0.016  0.022
  0.010   0.714  0.012  0.033  0.044
  0.015   1.071  0.018  0.049  0.066
  0.020   1.429  0.024  0.066  0.089
  0.025   1.786  0.030  0.082  0.111
  0.030   2.143  0.036  0.099  0.133
  0.035   2.500  0.043  0.115  0.155
  0.040   2.857  0.049  0.131  0.177
  0.045   3.214  0.055  0.148  0.199
  0.050   3.571  0.061  0.164  0.221
  0.055   3.929  0.067  0.181  0.244
  0.060   4.286  0.073  0.197  0.266
  0.065   4.643  0.079  0.214  0.288
  0.070   5.000  0.085  0.230  0.310
  0.075   5.357  0.091  0.246  0.332
  0.080   5.714  0.097  0.263  0.354
  0.085   6.071  0.103  0.279  0.376
  0.090   6.429  0.109  0.296  0.399
  0.095   6.786  0.115  0.312  0.421
  0.100   7.143  0.121  0.329  0.443
  0.15   10.71   0.18   0.49   0.66
  0.20   14.29   0.24   0.66   0.89
  0.25   17.86   0.30   0.82   1.11
  0.30   21.43   0.36   0.99   1.33
  0.35   25.00   0.42   1.15   1.55
  0.40   28.57   0.49   1.31   1.77
  0.45   32.14   0.55   1.48   1.99
  0.50   35.71   0.61   1.64   2.21
  0.55   39.29   0.67   1.81   2.44
  0.60   42.86   0.73   1.97   2.66
  0.65   46.43   0.79   2.14   2.88
  0.70   50.00   0.85   2.30   3.10
  0.75   53.57   0.91   2.46   3.32
  0.80   57.14   0.97   2.63   3.54
  0.85   60.71   1.03   2.79   3.76
  0.90   64.29   1.09   2.96   3.99
  0.95   67.86   1.15   3.12   4.21
  1.00   71.43   1.21   3.29   4.43
  1.50  107.14   1.82   4.93   6.64
  2.00  142.86   2.43   6.57   8.86
  2.50  178.57   3.04   8.21  11.07
  3.00  214.29   3.64   9.86  13.29
  3.50  250.00   4.25  11.50  15.50
  4.00  285.71   4.86  13.14  17.71
  4.50  321.43   5.46  14.79  19.93
  5.00  357.14   6.07  16.43  22.14
  5.50  392.86   6.68  18.07  24.36
  6.00  428.57   7.29  19.71  26.57
  6.50  464.29   7.89  21.36  28.79
  7.00  500.00   8.50  23.00  31.00
  7.50  535.71   9.11  24.64  33.21
  8.00  571.43   9.71  26.29  35.43
  8.50  607.14  10.32  27.93  37.64
  9.00  642.86  10.93  29.57  39.86
  9.50  678.57  11.54  31.21  42.07
 10.00  714.29  12.14  32.86  44.29
  (1) (1000/14)(17/14)(46/14)(62/14) 

Calcium

   Ca     CaCO3     dH  
  mg/l     ppm          
   0.00     0.00   0.00
   5.00    12.50   0.70
  10.00    25.00   1.40
  15.00    37.50   2.10
  20.00    50.00   2.80
  25.00    62.50   3.50
  30.00    75.00   4.20
  35.00    87.50   4.90
  40.00   100.00   5.60
  45.00   112.50   6.30
  50.00   125.00   7.00
  55.00   137.50   7.70
  60.00   150.00   8.40
  65.00   162.50   9.10
  70.00   175.00   9.80
  75.00   187.50  10.50
  80.00   200.00  11.20
  85.00   212.50  11.90
  90.00   225.00  12.60
  95.00   237.50  13.30
 100.00   250.00  14.00
 110.00   275.00  15.40
 120.00   300.00  16.80
 130.00   325.00  18.20
 140.00   350.00  19.60
 150.00   375.00  21.00
 160.00   400.00  22.40
 170.00   425.00  23.80
 180.00   450.00  25.20
 190.00   475.00  26.60
 200.00   500.00  28.00
 210.00   525.00  29.40
 220.00   550.00  30.80
 230.00   575.00  32.20
 240.00   600.00  33.60
 250.00   625.00  35.00
 260.00   650.00  36.40
 270.00   675.00  37.80
 280.00   700.00  39.20
 290.00   725.00  40.60
 300.00   750.00  42.00
 320.00   800.00  44.80
 340.00   850.00  47.60
 360.00   900.00  50.40
 380.00   950.00  53.20
 400.00  1000.00  56.00
 420.00  1050.00  58.80
 440.00  1100.00  61.60
 460.00  1150.00  64.40
 480.00  1200.00  67.20
 500.00  1250.00  70.00
  (1)   (100/40)(56/400) 

 

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