Y can't I get the stems to get green again. ..

Hey everyone,
Bit of a issue I hope not too big a prob...
Greenhouse. Grow... started wit twelve ten turned lady like, now the issue here is one and only one of my ladies has this purple streak thing goin on it started I thought it was cal issue so I did the old epison salt and it faded a ill but then today two days after feeding its back.
I give all of them two gallons of water every two days tryin to do the wet n dry cycle thing.
I jus dnt understand y it's one(I'm grateful) and it's a lil annoying. Can anyone tell me other possibilities that would cause one plant from the bunch to do this with all the same formula?
U see the diff in the pics its strange

Thats normal for older fan leaves to be purplish stems....purple streaks is not always a bad sign on "the main stem"

Thanks for a quick response.
Ty I find myself stressing more about things I usually wouldn't notice when bloom is near.

SwizzdaBeast said:

Thanks for a quick response.
Ty I find myself stressing more about things I usually wouldn't notice when bloom is near.

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Having an eye for detail will make you a goood grower...GL!