What is wrong

Why are some of the leaves starting to turn purple

@NicoZ @Outdoorman is this genetics of deficiency?

Check with your seed provider or google the strain to see if genetics is a possibility. Cooler temperatures can be a reason and perhaps too much nutrients.

These are all clones. Mother is the plant in back left corner and it was a clone that was a gift. Whats strange is the mother plant does not have any purple leaves.

Has the temperature dropped to around 50 degrees?

maybe it is nitrogen or sulfur def. u can investigate that, i hope this can be any help

Yes it has. It is usually about 62 but i noticed it was around 50 53 the last few nights. Im trying to make adjustments to the fans to figure out what to do at specific parts of the day. Temp may be good but humidity is either to high or to low. I need a few more pieces of equipment but dont have the space in tnis small box. If temp is doing it its genetics right? But why is the mother not turning? I feed water water and I may have watered to often. Using technaflora recipe for success. They dont look like they are dying and even the purple leaves look ok. I dont know whats going on @Outdoorman

@tronix thanksgor the input. Its 6 weeks in flower should i still be giving nigrogen tnis late in. I was thinking maybe Phosphorus def. But I honestly dont have a clue.

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Its the low temps, which are restricting phosphorus intake. I wouldn’t worry about it too much. Keep your temps between 70-80 degrees and everything should be fine. When temps get below 60 the plant really stops functioning biologically.

I see signs of low-temperature issue, which is not an actual issue because the plant is still healthy, it just changes its color a little.
Try using a cup of water, see if you can adjust the humidity with it. inside the tent on a side. Change the water often.
Maybe the mother is not receiving the same light intensity than the others? It in the shadows in the pictures I see.
Also as you said, you might be feeding too much water, I see a a difference between the pictures of the 22nd Nov to the ones of 6 Dec, you can see drooping leaves in the recent one.