Tips are turning yellow, what to do?

My only Northern Lights is one of nine.
All the rest are doing great in the same environment.
I’m concerned that all the tips are turning yellow, even the new growth.
Side note: I’ve been cropping and LST with black house wire.
I’ve been using Sensi Grow A&B every other watering per recommended amounts. (4ml per liter of A&B, actually 15ml per gallon)
I took this photo after giving them a light spray mist.

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I would back off on your feedings they may only need to be feed once a week
Do you know ppm of your run off on water days
Yellowing tips are the first sign of nutrient burn FYI
I zoomed in and see some yellowing in the leave iself
So I will ask what the ph is of run off as well
Occasionally you’ll get yellowing tips when you first start feeding

Join us so we can guide you when needed
:v:CB

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No major issues. However, as suggested…back of nute strength a little.

Thanks, PH is good. After more research, I agree nutrients are too often. Watering every 3 days at this stage.
All my Lovelies are doing great!! Just the Northern Lights Auto reacted. It’s been 2 days and she hasn’t gotten any worse. Hopefully she’ll recoup with just watering. They’re all 28 days old and growing rapidly. I’ll keep you posted.

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Just keep in mind that every strain and every plant within the strain is different and can behave radically differently toward stimulus. My last grow had a GSC-X that was sensitive to the amount of light it was getting but the other 5 plants could have cared less.

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Welcome to ILGM @FarmerJim. If you have a chance start a journal, i recommend doing so. And tag me in it if u dont mind. Would love to ride along.

If u need anything else don’t hesitate to ask