after looking at the pics a little more i think you have either a ph problem causing a lockout or just defficiencies of some sort. the leaves should be full and bushy, not so twisted up and spindly. the alternating nodes are totally normal though that is just what happens when mj matures. give more info such as lighting, nutes, temps, etc. and maybe i can help you get those girls turned around. oh yeah, what is the ph? that's where my suspicions are