HELP! Look weird on my ak47 auto

[chinesepizza]

Hi all
I need your help
This plant are week 8 and the bottom leaves drop down and upper part look great for me. But the flower bud very small

mans new leaves look awkward. Small and crawl down I think....

Organic Coco medium with no Perlite( sorry I am noob 8 weeks ago)
Ph 6.3-6.8 between
Cal mag 1ml per L every week start from week 3
Npk 888 1ml per L week start from week 4 stop at week6
week7 started flowering so I use npk 5-7-12 until now.
old leaf look yellow and drop and upper leaf are strong
but new leaf near bud flower are small and crawl down
may I know what happen?

[SoOrbudgal]

My thoughts are the soil is not aeriated no perilite and roots are not getting oxygen. New leaf will be small suger leaf at top of cola.

[Rwise]

The fan leaves being eaten is normal at this stage. I dont use coco, so no help there,,,,