Calculating dosages of fertilizer elements for a planted tank
This calculator is used to help aquarists prepare a "fertilizer solution" that
can be used to dose their aquarium. In this process, the aquarist will
add the dry fertilizer ingredients to a measured amount of water. The
dry ingredients and water are usually combined in some sort of sealable
bottle, which is used to store the liquid fertilizer.
Once the liquid fertilizers are prepared, the aquarist will add a measured
amount (usually measured out in ml) of these liquid fertilizers to their
tank daily or weekly.
Prepare each needed fertilier seperately, since the amount of each one
needed for any particular tank will vary, and will vary in a given tank
over time. In my case, I have to add K every week, but as my big fat
rainbowfish have matured, I've needed to add less and less Nitrate.
Preparing the stock solution:
References
Percentage of compound:
| Compound | Element | Pct |
|
| K2SO4 - Potassium Sulfate | K - Potassium | 44.9% |
| | SO4 - Sulfate | 55.1% |
|
| KNO3 - Potassium Nitrate | K - Potassium | 38.7% |
| | NO3 - Nitrate | 61.3% |
|
| KCl - Potassium Chloride | K - Potassium | 52.4% |
| | Cl - Chloride | 47.6% |
|
MgSO4+7H2O - Magnesium Sulfate Epsom Salt | Mg - Magnesium | 9.9% |
| | SO4 - Sulfate | 39.0% |
| | Other - water | 51.1% |
|
| KH2PO4 | PO4 - Phosphate | 69.8% |
| | KH2 | 30.2% |
|
Weight to teaspoon conversions:
| Compound | grams per teaspoon |
| Potassium Sulfate | 6g (estimated) |
| Potassium Nitrate | 5.6g |
| Potassium Chloride | 6g |
| Magnesium Sulfate | 5.4g |
| KH2PO4 | 4.8g |
| | |
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