At day 23 they got another watering. I decided to give ABB#2 and #3 a light feeding with 1/5 grow nutes and root stimulator at pH6.5. The run-off was 6.5 for ABB#2 but 6.8 for ABB#3, I'm not sure why. Since ABB#1 is a bit smaller it only got root stimulator, pH6.5 in and 6.5 out.
Day 24
Day 26
ABB#1 finally managed to reach the screen so I put it in its final position. I have the impression that it's more heat sensitive than the others. There was a bit of heat-wave over the weekend, temperature in the tent around 30C (86F), and it completely curled/tacoed its leaves while the other two didn't seem to mind. It should have the coolest position in the tent now so I will see if it picks up. Has anyone else ever noticed that some plants are more heat sensitive?
I also noticed that ABB#3 has started throwing out quite some pistils, I hope I get a bit more "vertical" growth though.
In order to avoid snapping more stems in the future I think I will pre-bend them a bit by tying them down with a string a day or so in advance before pulling them below the screen. It seems to work pretty well this way.
They also got a second watering. I gave them all root stimulator and 1/5 grow nutes at pH6.5 since I didn't see any signs of burn from last watering. This time the run-off from #1 and #3 was around 6.8, not sure what that's about. I think I will lower the pH going in a little bit next time.