The plants have been moved to a new grow tent; they're now under a 300-watt light. The tent is now 1x1 meters.
The overall height of the plants is fairly uniform at the moment, except for two: a Lemon Pie and an Apricot.
I've also noticed the plants are stretching; they're in pre-flowering.
The pots are 3.4 liters, which I think is sufficient for a Sea of Green (SOG) grow in a 1x1 tent. This allows the lower branches to receive more light and shed leaves as they grow. I've added nutrients with every watering.