Im doing calculator for ferts and ive done NO3 and PO4 but with K im missing the mark, comparing results with , lets say http://www.theaquatools.com/fertilization-calculator
this is my calculation:
((weight of fert in grams/weight of water)*10^6)*percetage of K in kno3 molecule= x ppm
i do that for k2so4 too , and combine results.
This are percentages of K atoms in molecules:
K% in kno3= 38,672%
K2% in k2so4=44,874%
Is that calculation and data ok?
this is my calculation:
((weight of fert in grams/weight of water)*10^6)*percetage of K in kno3 molecule= x ppm
i do that for k2so4 too , and combine results.
This are percentages of K atoms in molecules:
K% in kno3= 38,672%
K2% in k2so4=44,874%
Is that calculation and data ok?