Welcome to the forums bud. Best of luck with finding a couple more females. I know its only the first day of flower but do you plan on going with those fluorescents till the end?
Hi north,
looks a good grow didn't think them florescent's would pull it off but respect to you for trying,
That looks to me like they have nute burn especially that top bud site, those spots look like a mg def but dont quote me on that try adding a teaspoon of epson salts to 20l water, what nutes are you using and how often, might be worth while giving them a flush for a few days to get rid of the nutes and start with a lower feed.
Hope this helps