55 days old??!?
After the third week you should of known just too start over, especially if you have been logged on to this website.
There are many people with grow journals so if it would help, take a look around.
Plus there are people new too growing MJ like you, here at this website asking a lot of questions that you may need answered.
Your leaves are either burnt from nutrient lock-up or from that tin-foil. Try Mylar, stuff works great