Pictures are really bad for the most part- clearer pics would help tons if you really want opinions.I think I can make out some brown spots on the plants ?.
Could be pests or a number of problems.
You can start here. If you get better pics up you will get better answers.
Dude cut the middle part out (See Grow Faq Pruning section) and feed it some good Nitrogen Fert (Chook Shit) works well outdoors, keep an eye out for bugs and spider mites etc