While all three are healthy, a few variables from Weeks 1-2 handicapped growth here.
1) RH was too low (35-45%). I added a humidifier which cycles on and off every 30 mins. RH is now betwen 60-70.
2) LED was hanging too low / too close to the plants. There is new growth, but the plants are extremely compact. Also, the leaves might have started to get a little crispy. I raised it up to 25" from plants with more elevation to go when needed later.
3) I wasn't ph testing my water. I was using filtered water (which I eventually tested @ ph ~7.0). Now using water ph downed to ~6.5.
4) Not sure the lined paper pint cup was the best container. I'll use solid plastic Solos moving forward.
Day 18 and I can see some roots have made it to the bottom of the cups. I will transplant to 5gal fabrics this weekend. Hopefully the rooting hormone will arrive in time for transplant.
Day 20 - transplanted to 5 gal fabric grow bags.
Day 21 - fed 300ml Grow Big @ 10ml / Gallon concentration & 300ml Big Bloom @ 15ml / Gallon concentration.
@MadeInGermany, Hello! If you can see the growth coming off the node in the Week 4 Day 26 LST photos...that plant is from a non-feminized seed. Are those pre-flowers and if so, is it possible to tell if they are male or female? It might be too early but I thought I'd check! I can get better photos tomorrow. Thank you!