Blue Dream from Clone

–°hanged Mar 25, 2017
This is the start of my 2nd veg cycle.
Vegetation, 3 weeks
Blue Dream (hybrid)
  • Vegetation
    3 weeks
  • Everything seems to be going good, except the issue with the top leaf pictured below. I am not sure what this is, and would love some help/advice. She has bee fed 1 time and watered with RO water and CalMag, Fulvex, and Seaplex every other time. This seems to be the only problem area.