Wondering what problems these could be?

wondering what these could be I had to flush a week ago to remove toxic nute/salt build up my ppm dropped down to 600 then I watered with a 1/4 dose of advance nutes last water runoff was around 600 ppm so I was thinking that the yellow fade in leaves might be cause lack of nutes and maybe the brownish orange might be lack of calmag from nutes being locked out before should I up my dose to 1/2 I am 32 days into flowering

To me, that doesn't look like calmag deficiency, but I very well could be wrong. I like to throw the following link out there in hopes it may help...

http://www.growweedeasy.com/marijuana-symptoms-pictures

-spek

not entirely sure, it does look like a calmag problem. But it also kinda looks like it could be a zinc deficiency, because of the interior look of the leaves. Good Luck, hope u figure it out.

What's your medium?, nutes?, water/nutes PH?,...it looks like a low PH level too me, but just guessin' for now

EDIT: Too low or too high PH level can lock nutes out, you can feed all you want but if the PH is off, the plant can't use it...

ocean forest advance nutrients conno a + b big bud bud candy botanicare calmag all ph runoff is between 6.5 to 6.8 I had to add dolomite lime about 3 or 4 weeks ago to stabilize ph to good range I use florakleen when I flushed maybe I just flushed most nutes out so I might need to feed a little stronger dose is all I can think of always water with ph 6.8 water. Ill be doing dwc or coco next time