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...
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.