only thing looks weird to me is the same problem i had. the leaves are HUGE and the bud sites are sprouting so close to one another.....

i had the same issue and attributed it to over feeding. rather than nutrient burn, the plants are so healthy, that they are overgrowing what the main stalk can hold up.
even though my plants are only 8-12 inches tall, the diameter of the leave spread is almost 2 feet. the fan leave are HUGE (much bigger than yours) and ive considered pruning them to allow more light to pass through. i just transplanted to final pots, fim'd and will most likely begin flower at the end of next week. took me a while to get my light cycle together at the begining, and i finally got foxfarm nutes and some black gold soil (at a place more than 2 hours from me) but im finally starting to see some real results.

once i figure out how to post pics, and become less paranoid, ill start a log.....