Some help with identifying deficiency or burn

[GreenChrome]

Hey 420 friends, I gave these girls a half dose of Supernatural (they are used to a full dose), and I gave them the first 1/2 dose of Big Bud 2 days ago. They are in soil, just finished 4th week of flowering. They are just shy of 4' and a bit lanky. These pictures are of large fan leaves about 2 1/2' up the plant, 6" below the start of the cola formation. I feel I have not been aggressive with nutrients at all, but what do I know (grow 2). I have checked out the Problems, Pests... thread but still can not tell.

I have not supplemented with calmag, and was thinking is was either that or burn. I would love to learn, so if you can provide the explanation between the diagnosis it would be much appreciated.

Thank you very, very much. More info in my journal if needed, and I will do my best to answer questions.

 

[GreenChrome]

bump

 

[GreenChrome]

I suppose I will flush, seems to be the safest option. I'll do it when they wake up in an hour or so.

 

[GreenChrome]

279 views, and only one reply from a guy that knows the same stuff I do

 

[GreenChrome]

Might as well wrap this up- it was multiple deficiencies. How do I know? I flushed and everything got worse. Than added full strengt nutes and it is gettig better. Advice? Dont be a wuss when it comes to nutes.