I vegged this afghan kush X white widow under T5s and as soon as I switched to flower and put her under a 400 watt HPS she started developing these yellow specks w/ brown death . Doesn't look to me like a the normal yellowing you would see with a nitrogren deficiency but there is something weird going on for sure. Not sure if it's ph lockout, too many nutes, or not enough. This problems always seems to happen to me right when I switch to flower. I'm using R/O water with cal-mag added and haven't even fed that much throughout it's life. I flushed the plant about a week ago and it didn't seem to help to much. I flushed with r/o water (ph of 7 and 13 ppm) and the runoff came out at 3000 ppm and a ph of 5! However, flushing didn't seem to help too much. Any help would be great!
Pushing it up the forum again so people can see it . I do think have a awnser. Sent from my SAMSUNG-SGH-I317 using Grasscity Forum mobile app