Are you sure this is marijuana!? If so, there's no way it could be budding already, what lighting schedule are you on!? Chances are the problem has corrected itself and what you are seeing in the top cluster are the tips of your first set of "normal" leaves. It'll look like little green fingers almost... No white hairs, no bud! And at two weeks and four days, even an auto would be sexually immature. I'd bet the air stone incident combined with other issues (need a bit more info, nutrient use, lighting, ventilation, temps, pH, humidity etc) I'm assuming from seed? If it's a clone, disregard what I said about sexual maturity, a clone is as genetically old as the mother, and if placed anywhere near a 12/12 lighting regimen will most certainly start to flower and yield near nothing. In which case, you need to put 16/8-24/0 light and get her to reveg a bit! Again, very little information to go on here, so this analysis is assuming your nutrients, lights, ph, temps, humidity, and ventilation are spot on... Being your first, and a hydro setup, I'd imagine any combination of the preceding is the culprit in your issues! May want to consider doing a few grows in soil, and then working your way up to hydro once you have a full understanding of the process itself... Hydro reacts faster to stimuli; good and bad, which means it's not very efficient for a learner... Soil is much more forgiving, IMHO! Good luck and :welcome: to MP; you'll be addicted now!:rofl: