Using boom fert in veg to Adresse phosphourus defficancy

also, no biggie using "bloom" nutes if it makes sense. as long as the weighted average of NPK et al come out to necessary levels, all is welll.

purple petioles might be p-deficiency, but also simply just happen with some plants. LED may exacerbate it too. i've tried on numerous grows to avoid it. nothing really works. More p? more mg? nope. I don't see a p-deficiency here, either. leaves get a blueish hue and progreseses into dead spots on lower leaves. I don't think your purple petioles are related to p-deficiency without other symptoms.