Marijuana leaves turning yellow and brown spots

hey guys just a question my outdoor marijuana plant in Australia some of the leaves are starting to turn yellow.. It started about 3 or 4 weeks ago and seems to be getting worse. I transplanted it into a much bigger pot yesterday In hopes it needed more soil. I fertilize it every couple of days with some blood and bone and seasol seaweed fertiliser. I think it's a nitrogen deiciency and maybe something else. I read today that I can mix 1/8 urine with water and water it with that so I just did that now. I was wondering what could cause this? I'm worried cause it's my first plant and I don't want it to die. The tops of all the plants look healthy it's mainly bottom leaves and big ones. Lots of them. Thanks in advance

it's a nitrogen def. like you thought..
sometimes adding more nitrogen will correct the effected leaves, sometimes not.. keep an eye on the new growth to see how it's coming in..
you said you already fed it some n heavy nutes, i'd give it a few days and see how it responds..

I have always fed it the same for the past 4 months though.. Nothing changed except for leaves turning yellow