Nutrient burning?

Hi 👋🏻 From the picture it looks like your cannabis plant shows burnt or necrotic leaf tips, starting from the top leaves near the buds. This is usually a sign of nutrient burn (too much fertilizer, especially nitrogen or potassium) or sometimes a calcium/magnesium deficiency if the problem keeps spreading between the veins. Since it’s appearing on the upper growth, it’s most likely light stress combined with nutrient imbalance. Check your EC/ppm values, lower the feeding slightly, and make sure the light isn’t too close.

I think its a combo of things. Maybe needs a bit more Mg, maybe. but also top growth burning not on the tip but mid leaf could be from the lights being to intense. or air flow is lacking. https://420life.com/wp-content/uploads/2021/10/Marijuana-Leaf-Deficiency-Chart-scaled.jpg here is a leaf chart to help with some of the sysptoms.

It’s probably a nutrient deficiency because I see it on both your upper and lowers. I don’t see any mention of pH. Your nutrient deficiency could be a result of too high of a pH. 5.8-6.0 ph for coco and 6.4-6.6ph soil should get you better nutrient uptake. Best of luck on your grow.