Does your plants N P K have to been at a certain level or ratio? I was a list of organics you can add with different N P Ks, and I was wondering if there is something you have to control.
What?? you mean the NPK in the soil or water right?? in order to make MJ grow she needs different levels of NPK at every different stage of her life... seedling/vegetation/flower.... and the problem is that different nutrients producers advise for different ratios depending on the products you buy.... always read the labels and usually (like General Hydroponics) they have charts... check this out and play with it... hope this helps... General Hydroponics Flora Nutrient PPM Calculator
What is important is the ratios, not the absolute numbers. For veg you want the first number (N) to be equal or higher than the others. For flower you want N to be lower than P.