Sensi Seeds Northern Lights Fem 600W

Started 5 Feminized Seeds on 1/28/2017 and placed into Rockwool. Clones taken 4/9/2017. All Plants placed under trellis 4/9/2017. Will start Flowering this week some day. Curently under 400W MH Vegging.

Nutes:
Flora Duo A&B
CaLi MaGic
Dyna grow Silicon
Flora Blend
Floralicious plus

800ppm 6.1pH

Maybe someone could help me out. One of my plants has some weird growth goin on. You can see in the pic the leaves grow retarded with areas of shiny and matte on the leaf. I noticed this about month ago and treated as a possible Mg, Ca, and potassium deficiency. New growth isn't affected just older growth. Its the only one that is affected like that.

I had the same issue with a white widow autoflower flower I'm growing...all new growth looks fine...was told it may have been my soil was too hot for the bean and also that some plants have funky growth sometimes...girls looking real good man.