First Grow - Windowsill RQS Autos

Day 21 after germination Purple Queen Auto had quite some problems and is pretty stunted. It was treated the same as every other plant, but for some reason didn't develop as well. It seems to start to rapidly recover now. There were 2 aphids on the Purple Queen Auto and one thrips (is this singular?) on the Royal Jack Auto. 3 days prior to the photos all plants were sprayed with neem oil solution twice (about 10ml/l) and watered a bit (because they have been watered the day before) with neem oil solution (also 10ml/l). This resulted in quite unhappy plants with droopy leaves, but they recovered after 2 days and now look great. No fertilizer has been added since mixing in some with the soil and water had to be given seldomly (once a week). This seems to be on the verge of changing, the Northern Lights Auto will probably need watering more often now. Northern Lights Auto and Royal Jack seem to be the most promising ones. More leaves and thicker stems compared to the other ones.