Does it look good? 39 days from germination Ak47 ...

Hello. Been growing since 2014 and been gardening since 1999 and to me yes the plant looks like it has a poor root system and why such large pots already the plant has no structured root system.

honestly , not the best for that time, but it could be many reasons, from watering regime issues, weak light ( you outdoors, so maybe it was too cloudy too often ) or bad diet... main thing she is healthy, good colour, not overfed, weed will taste nice. hard to give more advices or help from few pictures ... her root system formed weak, you wont get much grow from it.

always 10-percent runoff *

does it have a hint of flowering? you may not have an auto. growth seems a bit slow. Better drainage/aeration in root zone can help. doesn't look like 70/20 coco/vermiculite. Coco should be fine with 33% perlite or similar, which vermiculite would be included. sphagnum peat moss should be 50% of volume by comparison. same with typical potting soils. fertilization with a soilless medium is super easy. 1.2-1.5 EC well-balanced feed and always 10 runoff waste water -- can be used outside but don't give to other potted plants and dont let your pot plant sit in its own piss, either. Wait for top to start to dry and repeat. If you differed from that, it also slowed down your growth. A good soilless or hydro nutrient regimen is 100% water soluble, 100% plant-available and preferably pH buffered so you don't have to worry about pH drift. pH drift is a sign of a shitty soilless/hydro fertilizer. vege mature plant, full bore on lights etc: N 120-130 P 40-60 K 180+ Ca 100+ Mg 75ish S 100+ local water may impact those last 2 or 3. That's on lighter side of things, but if you need more, just increase all parts to maintain the ratios. these are ballparks. Being off 10% here or there won't matter too much, or it will be a very slow moving and easily diagnosed symptom that you can quickly adjust and expect it to work better in the future. In flower, maybe drop N 15-20%, but if you see pale leaves creeping up from bottom, revert. VPD will be biggest reason to adjust overall concentration from what was given (think it's ~1.3EC). I typically have a slightly too high vpd, so i need a slightly lower overall concentration than those that don't run a bit too high VPD, but the building blocks will be used in similar proportions, regardless.