@Ferenc, Thanks...it's all good though. I learned a LOT...I put the males out in my (large, wooded) yard thinking the deer might enjoy it ~ they don't seem to care about it, but I still got to see how they grew out and what effect the topping, LST and HST had ~ more great lessons for later grows. Anyway, thanks for the support. :)
For humidity , easy solution :
1.Plant / frost fleece dome DIY, its just a breathable plastic, but it protects young plants from almost everything except no watering ;))
You can keep plant two-3 weeks easy under it
2. Hanger and wet bath towel, or hoodie, anything fat fabric and big and off course - wet ! Just item starts to stink after couple proper waterings and you will have to water it in your own rhythm, at mines in tent i needed up to 3 fat towels , but it always worked.
I never grow in soiless and have no knowledge, but i guess you started to feed girl a bit too early, she has everything inside of seed for proper up to first two weeks of development. Check this point one more time, especially i don't remember, that you have to use such quantities, even at late stage of flower for plants who brought up to 100 g , i never fed so much as you your little baby, but again i grow in soil, could be wrong...
Good luck !