What is causing yellow curled tips

[Firstauto]

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.

[LateNightGardner]

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”.

[Firstauto]

Thinking might need to reduce nute by half?

[LateNightGardner]

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.