Here is the low down so far
@arty zan
Average rule of thumb of thumb is you can expect to see the fist pistil at around day 21 (3 weeks) but it can be as early as 14 days (2 weeks), it may even go to day 35 (5 weeks) dependant on strain and to some extent environmental conditions.
So I recon you should be good to go at day 24, do you see any hairs yet?
What stunts/retards stretch, is the transplant time ie as soon as you see the first pistils, repot it to a bigger pot.
I use 8.5 liter autopot pots, I don't know what size a [HASHTAG]#2[/HASHTAG] pot is.
If you mean a 2 gallon pot then that is the same size as my 8.5 liter auto pots and for me, that is the perfect size for my cab which has a foot print of 100cm x 60cm (W x D) (24" x 39").
Remember to try and keep temps even 24/7 and fluctuations in temp between dark period and light period will increase stretch the bigger the fluctuation is!
I went to bed last night and just before I did I took a pic of my plants, today I looked at them and they did some serious growing in the night.
I'm gonna goo have a good look at them in a minute and make a decision weather today is pot up day, it just might be!
I'll snap some more later.