I switched to 12/12 that week and now waiting for the flower to show up.
Now added the organic bloom liquid in low dose for a good start into flower.
As I saw the first problems I also added some CalMag to prevent further magnesium deficiency.
about "organic bloom liquid":
-fructification sites grow to become powerful buds
-50% of the nutrients are instantly available, the other 50% feed the microflora and become available after 7 to 10 days, depending on the growing media and the microorganisms within
-high quality ingredients will give you a true connaiseur taste expierience