use in conjuction, what everyone has said. It all works in together. You can take a cuting and force the cutting to show sex on a 12/12 cycle. or wait another 2 weeks and check those nodes again. If you got the seed from a plant that went hermie or out of a bag of dank that had a seed or 3 in it is mos likely female. Your best bet is to wait a few more weeks and check the nodes again. Hairs = Female, Balls = Male.

BTW those lil ones look really healthy! Keep it up.