Conversions and Useful Information


Here is some useful information I have been collecting.

Conversions:

Temp

Celsius(Centigrade) => Fahrenheit
C = (F-32)*5/9
F = C*9/5 + 32

C°    F°
15    59
20    68
25    77
30    86




Volume

1 Liter      =   0.264 Gallon
1 Gallon     =   3.78 Liter
1 Tsp        =   5 mL
1 pt         =   16 oz
1 qt         =   2 pt
1 gal        =   4 qt
231 cu in    =   1 gallon
1 cu ft      =   7.48 gallons
1 cu ft      =   1728 cu in
1 cu ft      =   .02832 cu m
1 cu m       =   1000 l
1 cu m       =   1.3079 cu yd

Gravel       =   About 20LBS/sq ft @ 4 in deep




Length

1 Meter    =   39.4 inches
1 Inch     =    2.54 cm
1 Foot     =   12 inches
1 ft       =    0.3048 m
1 yd       =    0.9144 m
1 Yard     =   36 inches
1 fathom   =    6 ft
1 mile     = 5280ft = 1760 yd 
1 Nautical mile = 6076 ft
1 league   =    3 miles




Area

1 ft2=144 in2 = 0.0929 m2 1 acre = 43560 ft2 1 sq mile = 640 acres 1 m2 = 10.764 ft2

Dry Weight (mass)

1 lbs        =  16 oz = 0.4536 kg
1 oz         =  28.35g
1 kg         =  2.2046 lbs
1 gallon H2O =  8.347 pounds
1 cu ft H2O  =  62.4lbs
1 cu ft H2O  =  7.48 gal



Light

1 lumen     =  0.00147 watts
1 ft candle =  10.76 lux



Chemical

1 degree general hardness (GH) = 17.8 ppm CaCO3
1 degree carbonate hardness (KH) = 17.8 ppm CaCO3
1 meq/L alkalinity = 2.8 degrees KH

1 ppm = 1 mg/L

5.3 ppm = 1 g / 50 gal

Ammonia(NH3) = 1.1 * Ammonia-N
Nitrite(NO2) = 3.3 * Nitrite-N
Nitrate(NO3) = 4.4 * Nitrate-N


CO2 concentrations as a function of KH and PH

______________________________________________________________________________  
\pH   |   6.0     6.2     6.4     6.6     6.8     7.0     7.2     7.4     8.0  
KH\   | _______________________________________________________________________
0.5   |  15       9.3     5.9     3.7     2.4     1.5     1       0.6     0.2  
1.0   |  30      19      12       7       5       3       2       1.2     0.3  
1.5   |  44      28      18      11       7       4       2.8     1.8     0.4  
2.0   |  59      37      24      15       9       6       4       2.4     0.6  
2.5   |  73      46      30      19      12       7       5       3       0.7  
3.0   |  87      56      35      22      14       9       6       4       0.9  
3.5   | 103      65      41      26      16      10       7       4       1.0  
4.0   | 118      75      47      30      19      12       6       5       1.2  
5.0   | 147      93      59      37      23      15       9       6       1.5  
6.0   | 177     112      71      45      28      18      11       7       1.8  
8.0   | 240     149      94      59      37      24      15       9       2.4  
10    | 300     186     118      74      47      30      19      12       3  
15    | 440     280     176     111      70      44      28      18       4  
_______________________________________________________________________________ 
                 CO2  milligrams/liter 
_______________________________________________________________________________




The typical CO2 level for an un-injected tank is around 1-3 ppm/mg/l
The desired range for a planted tank is 10-20 ppm
Anything over 35 ppm can be harmful to the fish.





Here is another way of presenting it. I thought this might be helpful too.



The equation I used for the plots is:
10^(7.48-pH+@LOG(KH))

Here are some dimensions typical of Tanks

Tank                  Dimensions (in)      Weight(lbs)  
                      L  x  W  x  H       Empty     Full
 
10 Leader             20  x 10  x 12       11        111
15 High               20  x 10  x 18       22        170
20 X-High             20  x 10  x 23       32        232
10 Long               24  x  8  x 12       16        116
15 Show               24  x  8  x 16       22        170
15 Gallon             24  x 12  x 12       21        170
20 High               24  x 12  x 16       25        225
25 Gallon             24  x 12  x 20       32        282
30 X-High             24  x 12  x 24       41        340
20 Long               30  x 12  x 12       25        225
29 Gallon             30  x 12  x 18       40        330
37 Gallon             30  x 12  x 22       45        415    
23 Long               36  x 12  x 13       32        253
30 Gallon             36  x 12  x 16       43        343
38 Gallon             36  x 12  x 19       47        427
45 Gallon             36  x 12  x 23       66        515   
30 Breeder            36  x 18  x 12       48        348
40 Breeder            36  x 18  x 16       58        458
50 Gallon             36  x 19  x 19      100        600
65 Gallon             36  x 19  x 24      126        775
33 Long               48  x 12  x 12       52        382
40 Long               48  x 12  x 16       55        455 
45 Long               48  x 12  x 19       60        510  
55 Gallon             48  x 12  x 21       78        625   
60 Gallon             48  x 12  x 23      111        710   
80 X-High             48  x 14  x 30      200        990
75 Gallon             48  x 18  x 21      140        850
90 Gallon             48  x 18  x 25      160       1050
110 X-High            48  x 19  x 30      228       1320
120 Gallon            48  x 24  x 25      215       1400
100 Gallon            72  x 18  x 19      182       1150
125 Gallon            72  x 18  x 23      206       1400
150 Gallon            72  x 18  x 28      338       1800
180 Gallon            72  x 24  x 25      338       2100
10 Designer           13  x 13  x 19       19        115
15 Designer           13  x 13  x 25       26        175
10 Hexagon            14  x 12  x 18       12        110
20 Hexagon            18  x 16  x 20       23        220  
35 Hexagon            23  x 20  x 24       43        390  
60 Hexagon            27  x 24  x 29      110        750  




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