What is causing yellow curled tips

Grow Support
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This plant is 10 weeks old. Things that have changed recently: using advanced nutrients line been adding B52. Another change is temps have been hard to keep over 72 f.

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Sometimes you get a bit of yellow to brown tips or ‘painted nails” from nutrient burn. And the cool temps will keep you leak from plumping up or “praying”.

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Thinking might need to reduce nute by half?

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I would check runoff on your next watering, just use pH’d water to runoff and get TDS and pH readings. A little tip burn isn’t always a bad thing. Just back off a bit and check your readings.