Purple stems and leafs

Hey Chewy :) Purple leaf stems ? Completely normal its the plants natural defense agaist intesnse light the plant will create pigments as to better absord the light. If your seeing slight purple signs on fans then this is a potassium deficiency the only reason I know this is because during the flush most plants will turn purple and its due to the lack of pottasium at the end of a cycle with her being in flower i would assume shes not getting enough though this is only very very slight im sure the next feed it will sort itself out :) I think that plant is looking very nice maybe a little light in colour but Im sure a good feed will sort that out :) if the tips of the leaves are burnt too this often indicates there is a shortage of something in the feed or too much of something though its usually the latter I would up her feed abit when she dries out and see how you go :) Best of luck bro keep up the great work.