I use the old Super Thrive and Liquid Karma from almost the beginning. Then I introduce some GH Florolicias grow which is an adative nute that has a really low NPK. The Super Thrive I use right off the bat, misting clones and feeding clones. After first 14 days, they should be rooted by then, I start them off with a little Liquid Karma and then a few days later GH Florolicias grow and some Cal Mag.
Adieu