Those charts can be and are very misleading!
Lets ask some better questions.
you say what you use and how strong you use it - Ok,,BUT-
How often ?
Every watering ?
Do you add anything else ?
List everything you use !
I'll bet you feed to often and need to add a Ca/Mg and you should add a "zyme" type product also.
So then.
From what I can deduct from your post is that your in soil?
What soil ?
I would use pHed RO with Ca/Mg added for 7 days and then,,,,,
Alternate with your RO water with Ca/Mg added one day and feed the next and do that through out the whole grow!
pH everything going in to 6.5 and use a "zyme" product like AN VooDoo or Canna Zyme or CYCO Zyme any liquid myco's supplement. Ask your local hydro shop for some.....OR start making AACT basic bio tea and use that once a week in place of a watering.
Add a Ca/Mg (I suggest CALi MAGic from G&H for the added Iron) at 3-5 ml a watering.....
I might adjust my answer to what you answer.