Carn't wait for the pics snowwhite,
You do want to add just a little N to the mix to stop the yellowing,
When do you predict your plant will stop the vertical growth and just concentrate on buds?
Peace.
If it's soil less then it's hydro. There is no food in your medium to start with so you have to supply it in the correct dosage, Thats the whole point of it and you have more control.
pwace