Update day 30: seems like she is in the clear regarding the pythium. She is growing quite well. She is very bushy, fat indica leaves. No signs of flowering yet. The other two new are basically runts that do not grow.
@Fast_Buds, thank you very much for the opportunity! Sadly, I was attacked by some nasty pythium this cycle and one of them did not make it. The other seems to have survived it though!