Today I shortened all four plants by fimming. Let's see what will become of them.
Day 32: I think they took it well. The new shoots are growing.
Day 33: Today I actually had to repot. The roots came out from the bottom of the pots. Plant three is struggling as you can see. I hope it comes through well.
Day 35: I think the plagron light mix is too heavily fertilized. The plants give me the impression of being over-fertilized. The purple color of the stems is a hint. Then I will rinse them tomorrow.