Wow, what a week! They really took off this week.
I had to roll down the tops of the pots as the leaves started hitting them.
They are wonderfully symmetric (no training yet).
I was worried compared to other people growing the same strain that I was too far behind, but they are seeming to recover well.
I've been using a raspberry pi, a bluetooth temperature/humidity monitor and a smart outlet to control a cheap heater and humidifier... but I'm still struggling with high humidity at night (no dehumidifier right now).
Next week I'll get better ventilation working to see if that helps.