Nutrient deficiency? Appreciate help diagnosing. Journal outlines steps I've taken so far.

You will want to pick up a TDS pen to measure your EC of the feeding solution. If the EC is to high it affects the plant in a negative way. Autos are especially sensitive to this as well. growdiaries.com/journal/what-is-electric-conductivity-ec-and-total-dissolved-solids-tds good little read explaining the EC, some GD articles are bad this one is descent. https://www.autoflower.net/forums/threads/med-man-method-feeding-chart-ppm-ec.47856/ Good reference point for most auto growers. Still need to monitor the plant and look for signs of excess or deficient signs. It only works on total concentration not what its concentrated with. eg the ratios of grow + bloom + boosters/supplements Once you have this tool it will help you grow better. It is almost always a needed tool when using liquid nutrients unless you have used a product line for years and know what it does off by heart. Good Luck!