Few weeks into flower - How is she doing?

[Why Doe]

I've learned a lot from you guys and I really appreciate that, I'm almost done with my very first grow. This blueberry autoflower will be 2 months old next week. Couple questions;

I notice the top leaves on one of the colas is starting to get a light green, is that because she's nearing the end of her life cycle or is she deficient in something? I gave cal mag and big bud a few days ago. I was never able to figure out what caused or is causing the white bleach spots as everything has been pretty much perfect temp wise ect. Starting to notice rust spots as well. One of the colas is really fat as the tallest one is a little skinny, that I really don't understand as the whole canopy gets an even amount of light lol.

 

[Why Doe]

Nobody?

 

[Weezze]

What light do you have, and at what distance?
You're growing in soil? what nutrients?

You should add more information to have answers!

 

[Why Doe]

I gave a lot of information I figured that was enough. The light is only a 450w led and its not that close, the bleaching is not on the top colas closest to the light so I figure that would not be the cause. But that the rusting and the top leaves being real light green are my concerns.