Day 28 (4 Weeks) after sowing.
Unfortunately, the top 1/3 part of the Super Silver Haze's stem broke when I tried it to LST (was too much). But luckily it regenerates (I fixed it with a crepe band 2nd Photo).
2 days ago I added 5l of ROW with 5g of HaKaPhos Soft Ultra and 1,5g of Calcinit.
The PH was relatively stable this week, only today I had to correct it from 5,2 to 5.5 with a little bit help of Sodium Bicarbonate (Kaisernatron)