5 weeksNo, they're not feeding off of eachother. The auto just started flowering when it wanted to. How old is it?
That sounds about right.5 weeks
Many plants are genetically predisposed to have red/purple stems and petioles. As long as it shows no deficiencies it's more than likely not a problem. Use nutes according to manufacturers schedule (or slightly lesser amounts, until you see how the plants handle it) and you should have no problems.What nutes you think are low to cause this purple color?