N:P or NO3:PO4?

[beviking]

Just overthinking again.
Are we going for a 10:1 ration of N:P or NO3:PO4? Since N comprises 22.59% of NO3 and P comprises 32.61% of PO4, 10 ppm NO3 =2.259 ppm N and 1ppm PO4 =.3261ppm P.
If we go with N:P, then we should be dosing to 44.27ppm NO3 and 3.07ppm PO4...right?

Thanks reiverix for the molar mass calculator link! Weeeeeeeeeee!

[reiverix]

Try this link. I wrote a fert calculator that lets you input the molar mass. Quite handy really.

h2ocalculator (http://www.truescotland.com/h2ocalculator.zip)

Just unzip the files anywhere you want as long as they are in the same folder. You can also edit the xml file to add your own stuff. You do need to have the .Net framework installed on your computer though or it just won't run.

[RTR]

An N:P ration would be dealing only with the nitrogen and phosphorus, not the rest of the elements.

[beviking]

...but the rest of the element (NO3, PO4) is Oxygen which the plant doesn't use, they just throw it away...as evident in pearling. ;)