yes intake and exhaust. didnt look like nuteburn to me. since it started at the top cola. no other branches are affected by it.
You have Ph issues. Better pics would help confirm. Also looks like a zinc deficiency.
i use 6.3 everytime though, i flushed with 6.3 water though. hopefully it will bounce back quickly.Im with this right here.The same thing happened to my slh.It started at the top then leaves started to get spots.
Classic zinc deficiency..................
which is locked out due to ph issues.get a new meter from hydro shop for about $70
Glad we can come together to help my brother out...Classic zinc deficiency..................