she is wilting away

I'm 3 weeks into flower and all of sudden my girl looks like she doesn't have any water and is wilting away
I am using DWC
I have another girl at the same stage using the same nutes on the same schedule
The only difference in the 2 grows is the strains 1 is kurple fantasy (the 1 wilting) and the other is white poison
the lights are both 600W HPS
They are 2 feet away from each other in the same room with nothing separating them
I have changed out her nutes with no changes to her condition
Her leaves are a deep green with no discoloration of any they are just wilting away
Thanks for your help

How's is the root system, white? Also is the pump ok?

The roots look great
My stone did clog but has been changed out

Pics would be awesome....Could be a toxicity issue ....What are your water conditions? How far along are they?

With 2 600watters whats the heat like in the room. Some plants can take more heat and some cant depending on the strain and their origin.

Stays right around 75

how about the water temp .