Phosphorus deficiency? or something else? (Pics Included)

[M4tt]

I did some searching around to try and find out what it is. I am guessing it is some sort of deficiency but not exactly sure on the type. I did look on http://www.marijuana-seeds.net/Thanks-ThankYou.htm and it does sort of resemble a phosphorus deficiency. It is only those two bottom leaves that have it all the others are healthy.

http://i36.tinypic.com/wrdxs5.jpg


http://i38.tinypic.com/jrtnxi.jpg


http://i38.tinypic.com/24lt308.jpg


http://i33.tinypic.com/2d9oc28.jpg

[Naturalhi]

Look here; http://www.mjguide.com/modules.php?name=Tutorials

Then click on; Comprehensive Plant Problem Solver