Magnesium deficiency shows fading or rust in between the veins (like in the pics)

calcium deficiency shows rust spots as “dots” randomly all over the leaves.

phosphorus deficiency shows fading and/or rusting on the outer edges of the leaf.

Do with that info what you will.

Seems like you have it dialed. Still, you are at the top end of PAR with no CO2. That should be just fine, but you’re pushing them hard so just keep in mind some certain cultivars will be more sensitive than others.

Yw

Va Beach here!