purple mainstem= lockout/overhydration? my plants look like that and cant figure out what the heck it is...
she looks real happy. have you done any reading about sprouted seed enzyme teas? what about aloe foliar/soil drench? coconut water? I'm thinking these are all things you could start to utilize to get some good results. what teas have you been giving her lately?
EDIT: you must spread some reputation around before giving it to polyarcturus againyou deserve it...