12th week :
Last week, when the plants stopped growing upwards - i brought the lamps a bit closer to the tops. Definitely unnecessarily - as it turns out - because the tips of the highest leaves slightly scorched. Now, in turn, i have raised them even higher. I'm just learning LEDs.
Apart from that - everything looks great.
@DrJones,
I have a thermo-hygrostat (the one for a power socket). If the humidity is above 55%, then it turns on the heater and fans at higher speeds. This allows me to maintain the right humidity (between 45-55%).