Yellow and purpling leaves

Ran these genetics last harvest with great success. Took 12 clones which have also done great up until about week 4ish of flower. I have bumped nuits to full strength at week 4 which I believe we are getting in 5 n half or when 6 now. Was really weird that it started in the center of the canopy with 4 plants then spread but still the outer canopy still look great and healthy. My last harvest didn't look like this till I started flushing. Running coco and perlite, humbolt nutrients, ph 6.1 to 6.3. Temps are great between 75and 78

Hard to tell the color of leaves ,is it from the light?If not they appear hungry.Your watering to run off every time ?

myke said:

Hard to tell the color of leaves ,is it from the light?If not they appear hungry.Your watering to run off every time ?

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Yes I shoot for 10% run off. Been watering all 12 with 12 to 14 gallons

myke said:

Hard to tell the color of leaves ,is it from the light?If not they appear hungry.Your watering to run off every time ?

Click to expand...

Leaves are turning purple and lots of yellow as well.

Your adding calmag?

myke said:

Your adding calmag?

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The line of humbolt I got has it yes. I'm leaning toward a phosphorus deficiency. I used general hydroponics 3 basic nuits plus their bloom last harvest with lots of success. I still have some left maybe I should just finish this run with general hydroponics.

Sounds like the new nutes arnt as good as the old.