Rusty look leafs any ideas?

Looks lsike caclium symptoms, but like prohibition said, some signs of overfeeding to. P can lockout Ca. (Ca mostly does the lockint out, but P is possible -- see Mulder's Chart to verify what i say) So make sure P is not too high and if not, i'd increase Ca a bit without changing the overall balance otherwise as best you can. If p is not high, i'd look to N as being the cause of the dark/glossy leaves. Consider lowering that proportion of overall fertilization balance too... same idea, try to drop N a bit without impacting other nute molecules too much compared to previous levels.

Plant looks very dark so possibly an overfeeding issue. Secondarily, the excessive feeding is making other nutrients unavailable for the plant.