Help! Yellow leaves on autos

[Cycultivater]

Hi all growing 2 autos outside 1 zkittlez and 1 bluedream both autos the zkittlez is 9 weeks from seed I think about 2 weeks from harvest but fan leaves are yellow. The bluedream is 6 weeks from seed that iv done lst on, been in flowering for a couple of weeks. Zkittlez has had homemade calmag and ffj and blue just ffj. Any know what the problem is, was thinking nitrogen dif. The first pics are the blue and second two are the zkittlez

 

[lvstealth]

more info? lights? type dirt? pot size? any info about feeding and all, just let us know any details you can find

 

[lvstealth]

the three lobe leaves are a problem, unless you revegged on purpose?

 

[Cycultivater]

Soil is seedling starter 60%,coco 30%,perlite 10%

 

[Cycultivater]

Outside grow so light is around 6/7 hrs in a 15lt pot and started feeding with ffj twice a week