Yo, Blood, slow your roll on the nutes. You've got a couple of newborns there and you need to be feeding them baby food. If you are serious about raising these plants then stay away from Miracle Grow and get the real thing. Those plants only need one tenth of the concentrations of the nutes your are talking about, at best. You should be looking at a base formula for nutrients and a silica additive at this point in time. Then in about a week or so you can add in some beneficials and gradually increase the concentrations as the plants gain strength. The spotting you see is more than likely due to low nitrogen at this point which is easily corrected.