Hello!
I am using

OF for my grow, and will probably be using it for all my grows, until something changes (if there are mites, burns, etc.). I think each strains are different, but I am growing a Northern Lights Auto, which have been germinated in paper towel, then immediately planted into soil when the root appeared.
Since the soil has a lot of nutrients already inside, I did not have to feed her for about 3 weeks, just only pH water. And there were no burns, or any kind of signs that the soil was too much for her.
I know this might be a bit off topic, but I've been growing lettuce, pumpkins, and green onions in the

OF, and they're thriving in that soil.