AsNoriuanswered grow question 2 years ago Forth picture, for sure overfeed with nitrogen. Excess of it slows down grow and mew grow cones up dark green and slow.
3rd picturecould be magnesium issue beginning, but could be lightning and photo, maybe a bit too bright, aka hungry, but again i return to photo quality and lightning.
First two photo cant see even smallest suspicion anywere.
Not more than 0.5 ml/l of calmag if you use it with every feed. I hope you feed not with every watering.
Simple explanation of excessive nutritions
https://www.growbarato.net/blog/en/deficiencies-due-to-excess-nutrients/
Happy Growing!!!