At the beginning of this week I stopped regular feeding, and added wormcastings to each pot and watered with ~ 6 pH water for some days. I used lemon juice as pH down.
Also popped some seeds :)
@sanibelisl, thank you ! I am impressed how this is turning out by now, especially compared to previous grow :)
What lights are those? They seem to be cranking out some pretty serious PPFD.
The light is a Sanlight EVO-3-60 190W. since this month there is an improved 200W version available called EVO3 1.5.