They look fine at the moment :thumbsup: Being paranoid not needed now

May I ask you why do you foilar feed with root booster? Is it recommended to do that way or for some other reasons?
I'm asking because since its for the roots, making me think it should be applied to the soil. No?

Also you have light soil, so you should think of giving some grow nutrients as well. Since the plants are ok for now you may start with half dose and see how they react.
As I know, light mixes are for having control on fertilizing from the very beginning. I'm using light mix too but i didn't germinate in them, I used just before flowering and they fitted well with full dosage of feeding.