Properly ph'd water.

The Fox Farms Trio. Pretty-much to their instructions on the website. (not the bottle directions, which I believe assumes use as a stand-alone nutrient instead of a nutrient system) If in FFOF soil, use WAY less and sneak-up on a maximum if so inclined. I know WW grows great shit with his system, so don't discard it as too minimalist. More is hardly ever better in growing cannabis.

A quality potting soil of consistent mix and ph. I recently started using FF Ocean Forest, which is ph buffered and gives the plant pretty much all it needs. I'm using way less of the trio, but I did find myself thinking the plants could use a little bump of nutes during the growth phase.

Soil Syrup (humic acid) at half recommended dose, for after the monthly flush. (once of nutrient age through to harvest)

Unlulphured molasses (Grandma's, Brer Rabbit...) from mid-flower stage till harvest. Excellent source of carbs, iron, calcium and magnesium. Go easy on nutes while using it.