RQS Northern Light Automatic | 1st grow

WEEK7 Day 43 Today I prepared new solution again. Fortunately not in hurry :P 5L with 20ml Terra Bloom, 5ml Pure zym, 5ml Root juice regulated to Ph of 6,5. I used 1L / pot with a the same little runoff as last time. Also did some defoliation which I was doing continually since the buds got little developed. Day 44 #1 has her low leaves yellow on one side of the plant. They looked little nitro toxic but now it seems like nitrogen deficiency. I am little confused now. Day 45 Regular visual check before the watering. Seems to be ok, if we dont count the yellow leaves. Maybe the only suspicion I have is about the leaves size. Seems to be small and slow developing for some reason… Later that day I decided to water again because the medium got dry faster than I expected. Day 46 Visual check. Day 47 Visual check. Day 48 Medium si getting ready for watering, which I am gonna do tomorrow. Day 49 Today I watered my girls with CalMag water and i gone with 1ml/L.