You may have two problems- the RUST colored spots from one source and the silver trails from the other, or the rust spots could be scarring from the damage of the trails... lol confused?
I think you have pests causing the trails. The spots COULD be k def, or they could be scarring. A bloom fert with more K isn't a terrible idea for next time if that's the case, and I doubt you have lockout keeping up on your other stuff so well. But either way there's the bug problem. A pair of pyrethrin bombs set off 4 days apart will kill ANYTHING bug-like in there. Go! DOOOOO IT!!! Get'em.

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http://boards.cannabis.com/basic-gro...e-harvest.html<-It's a grow guide! Enjoy!
http://boards.cannabis.com/plant-pro...hy-how-do.html <- all the boring stuff about soil chemistry you never wanted to know
http://boards.cannabis.com/grow-log/...ml#post1837597 <-how to make canna caramels
http://boards.cannabis.com/grow-log/...ml#post1820481 <-illustrated cloning guide permalink
Contacting Her Dankness: stinkyattic at hushm4il-please use the same discretion you do on the boards, thanks.
I don't claim to know the first thing about growing anything; hell, I can't make a Chia pet sprout.