KJA#2 (in the middle) is stretching her head out first, closely followed by KJA#3 (on the right). KJA#1 still had her helmet on one day after, so I removed it manually.
Also, I start the lights with half an hour "sunrise", let them run at 20% (53W) for 18 hours, then half an hour "sunset".
So 10/06 is where I see the true start of the first week.
Each plant got 22.5g BioGrow and 35g BioBloom for the 15l. Maybe I'll add a bit more Bloom later on. At least I left a bit of space to fill in some more soil.