Bottom shade leaves wilting, drying, dying

My plant has now been growing officially for a month. I had no problems at all until about a week ago. The bottom shade leaves started curling up, drying up and die! I water approximately every 2 days (Taking notice of soil "dryness".). I am using a nitrogen rich nutrient for the soil as it is still a seedling. This is an outdoor grow and the plant is a local strain at my country. (I believe it's a sativa,indica hybrid but mostly sativa.) I love my plant yet I can't figure out what's wrong! Please help me out because I wan't to have some good in september/october.

Here are some photos:

Hi ya Gaz

Welcome To RiU

Looks like your useing too much nutes and have nute burn !

What did you do last week that was diffrent from the other 3 weeks ?

What soil is that your useing ? .. what brand of nutes are you useign and how much per ltr / Gallon ?

yes change the soil. u shouldnt give nutes to the plant till its at least a month old

Hi and thanks!
Well last week there was nothing different done to the plant of what I can recall just that I stopped watering with nutrients because I noticed the burn I think I might transplant to a new larger pot and give it new soil.
What I am currently using is tomato nutrient and the same goes for the soil since I researched and found out that their nutrient cravings are almost the same.
Cheers Amigo!

Well she's in a new pot and with new soil! Just to make sure I flushed the soil and I flushed the heck out of it! Some really disgusting yellowish water ran out looking like there where too many nutes. The plant started bending over so I propped it up with a chop-stick and a piece of string. Left her in the sun now lets hope she perks up!

Here is a latest photo: