Video at the end.
Watering:
12.05.
3,70kg - 4,27kg
14.05.
3,6kg - 3,9kg
17.05
3,6kg - 4,6kg
(1g green house powder feeding "grow" in 1L of water)
The training is going well, I added some force here and there. Plant seems to be happy.
I decided to order some powder feeding fertilizer, since the plant is now starting week 4 and is still quite small.
Update:
1g greenhouse powder feeding in 1L of water used at the end of week 4.