Your overthinking it buddy. Toss them ratios out the window and dont think about them any more PERIOD. Any and every tank is totally different when it comes to consuming nutrients. The plants we use, the plant mass, inert vs nutrient rich substrate, heck the type of rock you have eg raises kH or gH or both. So many factors go into how the system works.
I know some dosing regiems like PPS-Pro or The Redfield Ratio dosing of 15/1 N to P etc rely on ratios but this is old school thinking and we have come far since then. Think of it this way when dosing Full Ei we do this so that the plants have everything they need and then some. They take what they need out of the water coloum then we flush the system with a water change and start over.
To get technical this is why the major fertilizer company's all have each salt in seperate bottles. This way you learn what your tank needs and dose each element individually. For most of the All in One fertilizers they are all based off of the old Tropica Plant Nutrition fertz give or take some numbers.
