Ok so I'm growing 2 bubblelicious and 2 jock horror from nirvana in soil under a 400w Mh light. Tomorrow will be the 2 week anniversary since I planted them into the ground. I chose to use the gh flora hard water series and was curious about the schedule in which to feed them. The back of the bottle shows to put a small portion of all 3 in there at first. Everything I have read before reading the back of the bottle tells me to do one or the other and not all 3 at the same time. Is there a special way I should administer them? It also doesn't tell me what's actually full strength. And also what exactly is micro?