Maybe a little nutrient solution got splashed on that leaf/leaf tip.The tip of one leaf turned brown and I’m Tryina fix the problem b4 it gets worse so what do y’all think it is
Since it's only the very bottom leaf, I would guess it was touching the soil at some point. The plant looks really good otherwise.
That's generally for the mobile nutrients.Deficiency will normally creep up from lower in the plant.