Sorry about the broken branch Rex but like you said it's early enough to not make a damn bit of difference! Except for the rust spots the plants are looking great. I did wonder about this:
I'm not sure that 14ppm is enough to even slow it down, and it might be hard to distinguish slowing down from the spread it would be taking with no added Calcium. I don't think you're locking out Ca at this stage (too much P or K in veg?), so I think the regular dose would be a better idea.Now, this is a tiny amount I realize, and that's totally on purpose. I've been regularly bumping the PPM and recently added some more FloraNova Grow. This rust could be a deficiency or lockout I'm thinking. So by providing only a slight bump of Cal mag I'll be able to see if it slows, or progresses more quickly. That will quickly determine what needs to happen next.