Pretty sure that deficiencies problems were due a very hard tap water. I changed to normal mineral water and gave them one feeding without nutrients and now back to the previous schedule. It stopped stretching so I guess it is their final height. There are pretty equal in size and appearance. Just like dinafem promised. Buds are thickening. I read somewhere that in the last 2 weeks there are the biggest gains in size of the flowers so pretty excited how it will turn out. Have a nice day!
@GrowSport, Thank you, but they seems to be bigger on pics haha :D Final yield will show real final results. Thank you for your comment, appreciate it :)