Brown spots on plant.

I have brown spots on my plant

soil medium
Drip nutes
71 temp
55 hum

Week 3 flower

this is literally the only plant that is doing this.

Something is causing nutrient uptake problems. A couple deficiencies noted. Take a closer look at the others. The brown spots are showing a more severe deficiency. Look for the yellow veins, and uneven green color on the others. Less dark green growth or smaller at the tops ...

What is your feeding schedule? Can you show a full plant picture?