It is actually easy to give too many nutrients in a soil grow depending on the soil you start with. I prefer happy frog because it is not as hot as ocean forest and I know there is a lot more soils out there that I have never tried. I wouldn't try to do a whole grow with just the nutrients in the soil (imo). I also never give as much nutrients as the label says. I start with nutrients early very lightly and build the strength up depending on the reaction I get from the plant. I like to see just a tiny amount of nute burn in the leaves of a mature plant.