Dried out rust patches

One dose of cal/mag wont fix things and the damaged leaves will not recover. You need to give cal/mag before flowering starts, in small doses every 7-10 days to prevent the deficiency, by the time it shows up in the leaves, it is already 2-3 weeks behind the eight ball. Once it shows like in your pictures, giving cal/mag weekly will stop it from progressing much further, but the damaged leaves stay damaged.

Going to agree with Ezzjaybruh here... whatever is in that compost tea of yours is probably much too heavy in nitrogen - it's why the plant has earned your nickname of "Twisty" and the leaves being much too dark green along with the symptoms of lockout. I'd go back to the drawing board on your recipe for the tea and figure something else out - or get some organic nutrients that have already done that for you... Good luck!