RQS Purple Queen

I changed the light schedule 12 / 12 on 9th of June. She starts to stretch now. Some lower leaves are becoming light colour day by day. And new leaves do not grow dark green. I guess this is the deficiency of N. The WEB page of Plagron say batmix includes fertiliser for six weeks, but depend on each case. And also batmix users in GD noted they do not add fertiliser and I can see healthy girls. I transplanted three weeks ago. I feel it is too early to add fertiliser. I started to add fertiliser with the small amount and will increase step by step. I did not check carefully after changing flowering schedule. June 12, the girl has a little bit of underwatering damage. She is still not so big. But, drink water like a big monster. Log June 9: Starting flower phase. Watering 4 L with Plagron power roots 1ml / L. EC = 0.33 mS / cm June 12: Watering 4L with Plagron green sensation 1ml / L. EC = 0.89 mS / cm. No run-off June 14: Watering 4L with info described before comment. Very less run-off