White Castle - DIY LED - SOIL

It is my 2nd grow, first was bagseed sativa , cfl grow, ended up with B grade product, harvested at 7 weeks .

Now got 3 plants in soil of Nirvana White Castle reg..Small closet grow- 65x35x120cm.

50W 6500k white led(switching to ww when flower).
2* 20w 660nm leds (driven at 10w till flowering).
9 * 3W 450nm leds.
18 * 3W 660nm leds.
Running lights 12on-5.5off-1on-5.5off-12on...
(Going to build new DIY led panel 90 leds total..just waiting for parts, (60% ww leds, 20% 660nm , 20% 630nm)

Using BioBizz Fish Mix(stinks alot!),root juice and fulvic acid.

3 Days ago: (new pics later today)

So it is 3 weeks and 5 days.
Done FIM on one plant 2 days ago, seems to grow as fast as other 2 and recovering pretty good.
Unfortunately one of them 90% male, another one may be too, and the FIMed one show no signs of preflower, may be coz male preflower first(hope it is so in this case..) or due to stress... any way I put another seed in soil and going to flower it with the big girls, ore big girl at least.
I will try to clone them just for training even if it is male.

Need help in identifying sex thanks!