discoloured leaves?

here are some shot of the plants,

just wondering what type of deficiency they have if you look at the last picture.

is it smth i should be concerned about?

its alot harder to diagnose from pictures then seeing it with your memory, http://www.greenmanspage.com/guides/plant_abuse.html < click that link and check it up, it will tell you everything, i hope this helps

happy smoking