Help Me Save My LAST Surviving Plant!

[ellz]

Hi 600m. It looks as if the plant is over watered. However, that could also be a sign of nitrogen toxicity! Nitrogen toxicity mimics the symptoms of over watering AND nitrogen toxicity in that the leaves look clawed and the lower leaves yellow and fall off. Here is more info on how to correct it if that is the problem: http://www.growweedeasy.com/nitrogen-toxicity-cannabis

[600m]

About ten days ago, this plant looked great, though the other three of the four plants I had are now dead.

I can't figure this one out. The leaves, once dark green and perky, are now starting to fade and droop, though the worst of the heat seems to be over with for a while...and the new leaves are not a wholesome green either. It looks as though the plant is trying to die from the bottom upward, as the other three did, I thought because of heat damage this one hasn't apparently sustained.

It looks kind of like low nitrogen to me, but I have given it fertilizer and it should have perked up by now. I'm stumped!

This is my LAST surviving plant and it looks like it might yet be salvageable...if I knew what was wrong.

HELP!