sorry if im just not interpreting right, but not really i shouldn't add soil, or just a small bit if i do? or not really you shouldn't have to lay off the nutes and its okay to add soil?not really but just a hair if u want. not 2 much though
the roots will go and use it they will simply have the roots grow into the top layer cuz more room = more roots, is it maybe only seedlings that work like that?I doubt a stem will push out new roots unless it is scored.