Three plants, three different deficiencies?

I've read and looked everywhere. Compared pictures. Read the nutrient section out of seven grow books. And I can't really figure this out. I've come to realize i'm just not very good at diagnosing nutrient problems. Anyways below are two pictures. The first contains four leaves from one plant very late into flower. I'm pretty sure that is a standard nitrogen def and it has been with the plant for a few weeks now but i see the dark legions and wanted to make sure there isn't anything serious going on. The next picture shows two rows of leaves, the first row is from one plant the second row is from another plant that is the same age. Both are 12/12 from seed and are almost 2 months old now. Both problems started at the bottom of the plant and are working their way up. The first plant has had uniform yellowing from the inside out to the edge of the leaves. The leaves are a very bright yellow. Like a ripe banana or a wasp. Necrosis started in the middle and worked it's way out also. Leaves are twisted and pointing up. The next set of leaves has turned extremely pale throughout. Looking almost white. The leaf tips are dead. Any help would be tremendous.

why is it so hard to get any responses on here?

what do u mean man? Thats how the leaves get during flowering. The plant sucks all the goods outa the leafes and the leafes shrivle up. Whats the issue? i think your tripping too hard...every plant is going to be different(slightly). Did u yield? how was the bud?

That's N, Mg and P deficiencies that usually happen during flowering starting with the lower leaves and working it's way to the top. There are many ways to "contain" it depending on what stage of flowering you are but it'll inevitably happen

Thank for the responses guys. I haven't harvested yet but the pistils on the oldest plant are starting to turn. It's my first bud harvest so I'm prett excited and nervous a bit too I guess. With the younger plants though I feel like it is too early for them to have such severe deficiencies. Half of each plant is affected.