Autoflowering Problems, need some help

Hi everyone, im having some problems with this autoflowering strains, they are at the end of week 6 till they germinated.
Im growing with canna coco
Feed them with Cal+Mag till raise 0.3 EC
Bcuzz Coco A+B at 1.7mlxL till EC 1.0
Give them some Canna PK13-14 at 0.5mlxL which gaves me an EC of 1.1
PH at 6.0
Dont know whats the problem here, hope someone can help me please

It seems to me like a phosphorus deficency, some more ideas please?

some help please!