Purple stems 1st grow soil

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.


Pretty common nothing to stress out about.could be genetic

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

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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?