The plants are getting a bit taller and growing at very different rates. Flo 3 shot up and overtook Rainbow Serpent that was previously taller. Flo 4, the tallest, continued to shoot up. A plain watering earlier in the week was followed by nutrients that were clearly needed as shown by continued yellowing of lower leaves, but the curling has not stopped so perhaps that was caused by heat and not excess nutrients. The light was raised to allow a slightly larger gap (increased from half inch to one inch) between the light and plants to try to ensure they don't over heat.
One more week of growth and then they get topped and the tops are grown as clones to flower.
[I am also a week behind on logging my updates and hope to get caught up, not that I think anyone is following this in real time]
I wouldn't be sure whether a plant was male or female until putting it in flowering light cycle for a few weeks. I recently grew DJ shorts Blueberry F5 and Blue V2, which I was able to re-veg, but the two big Blueberry F5s have not come back and I am about to call them and replant, but they did produce hundreds, maybe thousands of seeds crossed with the male Blueberry F5 I grew out and then shook all over them. It's amazing how little flower you get when the plant makes seeds. But now I have enough seeds from my initial pack to grow out 50 at a time and pheno hunt for the most blueberry I can find. Gonna put them in solo cups and re-veg them after a handful of weeks in flower, and transplant to 5/7 gal pots with a fresh JMS (JADAM Microorganism Solution) to help ease the transplant and boost root growth.
Your bonsai trees look cool. I'd wanna be sure before I chop any. You could stick it in a little cardboard box with a light hanging above it on a 11on/13 off timer and you should know for sure a few weeks later