Hey bro! 👋
This is definitely nitrogen overdose, there's such a hell going on in the growth spots! In a couple of days, the leaves will turn yellow and brown in the growth areas, and then it might be confused with nitrogen deficiency! You addressed your question just in time and noticed the problem! Good job! I'm giving you + for your attentiveness! 👆
Cut down the "Gro" additive by 3-3.5 times! 👌
Good luck, buddy! ✊😇