Hydro Drooping and Yellowing during Flower!

Ok so it's gotten to the point where I definitely need some help here..... After a week or more of drooping I can't get her to perk up again.

Aerogarden (1 gallon tank)
Floranova Bloom ~2tsp + Liquid Karma ~4ml + Distilled water
PH maintained at 5.5-6 (usually 5.7ish)

I am aware the plant's been a bit nutrient burned. Should I flush? I don't have PPM meter which I'm aware is important, but I am refreshing the tank every week so I thought it wouldn't be a problem.

Also, she hasn't drank much water at all the last few days. Root problems I'm guessing(?) or PPM too high...

Here are the pics:
http://cl.ly/1x1I1g0C3K1C00272v3c (drooping)
http://cl.ly/46413y1N1y2J0N0R4416
http://cl.ly/1M2J23312C022E16383K (roots)
http://cl.ly/14031j0i2C2d1A0Q291k (yellowing)

Help much appreciated!

definately root issues. how much oxygen are they getting? how often are you feeding? you might need some silica and a salt leaching solution like clearex. a wetting agent might help improve uptake as well(ask your local hydro store). use those and flush with it for a while until roots look better. and look into your oxygen output maybe its plugged and not delivering enough.