Quote Originally Posted by Rusty Trichome
Ok, you're getting fresh air. But do you have a circulation fan on 'em? If not, there will be 'dead spots' of stagnant air.

I'm just going to throw a few things out there and see what sticks-out with your answers...
There has to be a reason for this, but since you've OD'd em...this might just be a temporary step in it's healing process.

If you keep the soil oversaturated for a couple of days, the leaves can't transpire enough moisture compared to how much the roots are uptaking. After the droopiness, the yellowing and stunting starts. Keep your eyes open. I know you've been adjusting and flushing and such, but how long since the soil was allowed dry-out a bit?

Just to rule out the obvious...
How often are you watering?......in two weeks their had 3 waters 1 flush
When do you water?..... when lights are on
How much water do you add? ..... water until there is a run off
What size pot?....... 14ltr
Do you spray anything on them, or have you sprayed anything that would either overhydrate the foliage, or clog the stoma's which will prevent transpiration? (Stoma Yes i have sprayed a couple of time , ( i read it was good for moisture??)

And finally...a real long-shot. What brand of tent, where did you get it, and when did you get it? Just curious, because of the vinyl outgassing problems the past few years with some tents. But I'm pretty sure this problem has different indicators. (severe yellowing and neckrosis I believe, but am not 100% certain) There's a thread or two here somewhere regarding the issue.
......Century grow systems mylar tent 1200x1200x2000 , I got it 1 week b4 i planted , and i got it from my local hydroponic store!