Not perfect, but not tooooo bad.
You can see the deficiencies clearly in the pics. The older leafs are pretty damaged, and the plants dropped more leafs than I woud like. I would say that they have a "pretty high" food deficiency, but at least the new growth don't look so bad. Also, probably, some PH fluctuations and a fuckton of excessive heat.
The good news: the taller branches of QM#2 and QM#3 increased it's high by ~10-13cm (now they are around 35-37cm tall) in the last 7 days. The smaller branches not quite that, but they also became taller. Overall size of the OE have also incremented.
I have to say, though, that I observed a bigger internodal distance in the top quarter of the QM#2.
You may also remember that I have 2 more plants: QM#4 in a 7l pot and an ACE MIX in a 3l pot. I'm not showing pics of those because I'm ashamed of their conditions. Maintaining root-bounded plants in such small pots is a nightmare for me. Days like today, where the temps reached 43+ºC, the plants went from recently watered to "almost dead" in just 16 hours. Even the bigger pots were almost dry, and I did water them this morning... The 44Km/h dry winds didn't help too much either.
That's all for now. I'm making mistakes and probably my conclusions are wrong, but the practise makes the master they say.