Discoloration First Week Flower Flo N Gro

[Izzyi2d]

I recently switched from soil to the flo n gro system.... im using GH nute line.... i run the recommended amount of each nute and after the 2nd day under the HPS i get discoloration on the plants... i dont know if this is stress ... heat burn.... nute burn... not sure looking for any direction really.....PPMs are also kind of low ... around 600....thanks in advance...

 

[fatawa]

Need cal mag for the spots...1st pic kinda looks like slight heat issue.leaves r tacoing on u..cant tell if its the lighting but 1st pic also looks like yur heavy on "n".someone else will chirp n bout ppms..i grow dwc in id b round 900 at yur point.maxing out around 1400 n wk4-7 n id b like 300's(just cal mag,thrive alive,budcandy)for last 1-2 wks.