So the stretch continued and I ran out of space, so had to resort to some HST in the form of supercropping. Never tried before, but hopefully it turns out well.
Other than that plants continuing very nicely. No sign of flowering from the 12 12 from seed plant yet though, don't think it's a technique I'll try again.
@TheManicOrganicDK,
Hey man, thanks for the question.
So, I originally planted just one seed, and that vegged for 4 weeks under 18/6 light cycle. Then when I flipped it to 12/12, placed a freshly germinated seed from the Same pack into the tent, so that one (the smaller one) has only ever seen 12/12.
Have a great day.