Blue Blueberry Widow, Or Unhappy Bw?

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friends

You can see the tips of some leaves are going dark.

Is this blueberry widow turning color due to the chill snap? I was vaguely hoping to get the blues coming out.

OR

Is this plant unhappy and something is going wrong?

This is the same plant that I put under a light to extend the veg period, following advice I’m my other thread.

Option A please:)

 

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Oh the rest of my urban farm is fine. The Pineapple Kush, northern Lights, younger blueberry widows and the mothibhen are still perfect.

 

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Forgot to load the video!

 

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The blues
After a few days
Continues