Currently in week 5 of flowering. Grown in soil/perlite mix feeding as per chart CX a & b, headmasta and mighty bloom. Looks like possible calcium deficiency? I don’t know pH beforehand, but flushed two days ago and pH is 6.5. Should I continue as per feeding chart which would mean week 6 only mighty bloom and headmasta (potash) or supplement with cal mag or just use normal a&b as per say week 2-5?