Is this a problem?

Hi
I need some advice on the condition of my plants. As you can see my stems are red/purple in color but the plant seems healthy! Is this normal or is it nutrient defeciency/over dozing? I have psroeted new seeds as well and the same thing there.
Plz help

You have nothing to worry about. they look natural and healthy. Some strains do that.

Nope, its not. It's either genetic or are your temps are getting pretty cool at night? either way its not a problem.