Having a problem in roots organic soilless mix (coco)

[desertmedgrower]

Here's a pic of a leaf that I have pulled off about mid way down the plant, about half the room is looking pretty bad ...

Anyone have any ideas?
was gonna flip any day but I 'm not so sure now.
ph of run off is 6.0 and 600 ppm after watering with 5.4 ph Floranova Bloom

 

[woodsmaneh]

looks like a micro nutrient deficiency to me . Try some Cal-mag.

 

[cctt]

Phosphorus def?

 

[Seamaiden]

P-, in my opinion. I haven't worked with that media, but I think you can push more food.