wait till the plants are 2-3 weeks old and then start the nutes at 1/4 strength. as for the nuts i like the AN sensi grow 2 part works good for hybro or dirt
Like the previous poster I recommend 2-3 weeks old and I also start at 1/4 recommend strength and build up to full strenght. I use FoxFarms Big Grow for Vegging and Big Bloom and Tiger Bloom for flowering.