Purple stems 1st grow soil

[manitouboat]

First grow

Wondering why some of my stems are turning purple. Grow tent fox farms frog. Using RO water pH at 6.4 week 9 of veg. Plants aseem healthy. Just started feeding yesterday with FF grow and bloom.

[ConcreteBudz]

Pretty common nothing to stress out about.could be genetic

[Mefis]

Welcome to the community @manitouboat
Like @ConcreteBudz said can be genetics or temp but nothing to worry

[manitouboat]

Thanks, it did get down to 63 one night in the tent. Usually runs between 73 and 80.

Thinking I need to flip to flower soon or my tent will be too full. If so any suggestions before flipping?