follow problemchilds advice... my indoor CFL grow got busted, but the stupid swine's left 4 clones in my "outdoor clone-box", i didn't check them for almost a week, they were just sitting there... ALMOST crispy... misted them a bit, misted the cubes, and VOILA! 2 days later, right as rain!
I wouldn't use vitamins or seaweed extract as a first measure... try au natural H2O