So I'm building my own databases right now to take care of fertilizer calculations. Since so many people use APC's Fertilator for their calculations, I decided to get the grams/teaspoon conversion for anything listed in dry weight. These numbers are rounded now and then, but not by very significant amounts:

Nitrate NO3:

KNO3: 5.2g/tsp

Ca(NO3)2.4(H2O): 4.8g/tsp

Phosphate PO4:

KH2PO4: 5.6g/tsp

K2HPO4: 4.5g/tsp

NaH2PO4: 4.5g/tsp

Na2HPO4: 4.5g/tsp

Potassium K:

K2SO4: 6.4g/tsp

KH2PO4: 5.6g/tsp

K2HPO4: 4.5g/tsp

K2CO3: 4.5g/tsp

KCl: 4.5g/tsp

Seachem Equilibrium: 5.33g/tsp

Calcium Ca:

CaCO3: 1.2g/tsp

CaCl2: 4.4g/tsp

CaCl2.2H2O: 3.6g/tsp

CaCl2.6H2O: 4.5g/tsp

CaMg(CO3)2: 5.2g/tsp

Ca(NO3)2.4(H2O): 4.8g/tsp

CaSO4.2H2O: 3.1g/tsp

Seachem Equilibrium: 5.33g/tsp

Magnesium Mg:

MgSo4.7H2O: 5.1g/tsp

MgCO3: 4.5g/tsp

Miller Microplex: 3.9g/tsp

CaMg(CO3)2: 5.2g/tsp

Seachem Equilibrium: 5.33g/tsp

Iron Fe:

CSM+B: 4.3g/tsp

Miller Microplex: 3.9g/tsp

Seachem Equilibrium: 5.33g/tsp

10% DPTA: 4.4g/tsp

If anyone has weighed these compounds and figured out their volume in a more accurate method, I wouldn't mind listing those numbers either. Fertilator density measurements are based on a bunch of different people's measuring cups and teaspoons that have obviously varying accuracy when one looks at the Fertilator threads.

-Philosophos

Nitrate NO3:

KNO3: 5.2g/tsp

Ca(NO3)2.4(H2O): 4.8g/tsp

Phosphate PO4:

KH2PO4: 5.6g/tsp

K2HPO4: 4.5g/tsp

NaH2PO4: 4.5g/tsp

Na2HPO4: 4.5g/tsp

Potassium K:

K2SO4: 6.4g/tsp

KH2PO4: 5.6g/tsp

K2HPO4: 4.5g/tsp

K2CO3: 4.5g/tsp

KCl: 4.5g/tsp

Seachem Equilibrium: 5.33g/tsp

Calcium Ca:

CaCO3: 1.2g/tsp

CaCl2: 4.4g/tsp

CaCl2.2H2O: 3.6g/tsp

CaCl2.6H2O: 4.5g/tsp

CaMg(CO3)2: 5.2g/tsp

Ca(NO3)2.4(H2O): 4.8g/tsp

CaSO4.2H2O: 3.1g/tsp

Seachem Equilibrium: 5.33g/tsp

Magnesium Mg:

MgSo4.7H2O: 5.1g/tsp

MgCO3: 4.5g/tsp

Miller Microplex: 3.9g/tsp

CaMg(CO3)2: 5.2g/tsp

Seachem Equilibrium: 5.33g/tsp

Iron Fe:

CSM+B: 4.3g/tsp

Miller Microplex: 3.9g/tsp

Seachem Equilibrium: 5.33g/tsp

10% DPTA: 4.4g/tsp

If anyone has weighed these compounds and figured out their volume in a more accurate method, I wouldn't mind listing those numbers either. Fertilator density measurements are based on a bunch of different people's measuring cups and teaspoons that have obviously varying accuracy when one looks at the Fertilator threads.

-Philosophos

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