Nute burn? Root Rot?

Hey I just came back from 2 days of not seeing my plant, and 2 days after readding my nutes in, and 1 of my plants have root rot. some roots are brownish.
ALSO, some of the older leaves have a dark color in the vains of the leaves.

Today I bought liquid seadweed, so when I got to my plants, I saw what I saw, dumped my resuvuar, filled it up with water that has been in the fridge with no lid, for 2 days now, and added some liquid seaweed. I added 8 Teaspoons for 2 gallons, like it said on the package.

I am hoping the root rott and the darkness on the leaves will dissapear by the next time i come back, itll be in another 2 days.

I am stopping misting.

HERE ARE MY PICTURES

http://i28.photobucket.com/albums/c242/adam-420/P1010452.jpg
http://i28.photobucket.com/albums/c242/adam-420/P1010453.jpg
http://i28.photobucket.com/albums/c242/adam-420/P1010454.jpg
http://i28.photobucket.com/albums/c242/adam-420/P1010455.jpg
http://i28.photobucket.com/albums/c242/adam-420/P1010456.jpg
http://i28.photobucket.com/albums/c242/adam-420/P1010457.jpg
http://i28.photobucket.com/albums/c242/adam-420/P1010458.jpg
http://i28.photobucket.com/albums/c242/adam-420/P1010459.jpg



help.......

Water straight from the fridge could hurt your plants too, it needs to be room temp before it goes to the plants.

The nute burn doesn't look very severe, hope they recover quickly.

as do I
check my Grow Journal in my signature for updates in 2 days.