Help with Leaf Diagnosis Please

[TheColt]

I think it looks like phosphorous deficiency, leaf stems are purple as well? Not quite sure. It's from a mother plant in a waterfarm hydro module. Feeding at 450ppm, about 2 feet tall and a month old. Using Flora Duo GH feeding schedule for nutes with cal mag. Thanks

 

[ics]

you might be dealing with some lack of micro nutrients bragh