White Widow stressed out!

I feel sorry for this girl. I dont think shes feeling well.
I got these WW clones from a guy off craigslist a while back and shes 7 weeks in!
IMO she doesnt look 7 weeks in and arnt WW suppose to be indica dominate?
I use 3 part GH flora
I just added a GH liquid cool bloom additive this week to try and fatten her up.
PH is at 6.0
PPM is at about 1200
Shes got a small spider mite issue...

Anyway is this girl going to fatten up or whats going on?
and she looks to have a PH problem?

Your PH is a little high, but looking at the leafs, I'd say that is one of the Sativa dom. plants.
7 weeks on a Sativa, I would guess yes it will fill up more.
Can you take some closer better pics with normal light?
http://www.kindreviews.com/05/white-widow/

Little hot and humid in there ~

temps normally at 76-78
humidity at 40%
CO2 ppm normally at 700. spikes about 3 times a day to 3500ppm then falls within 30 mins

nah its in a homemade hydro "waterfarm 5gallon bucket"
but yeah those leaves are a big concern of mine. she looks like shes undergoing a lot of stress.
im thinking its the mites. i monitor her daily and pull any leaves i see mites on...

The claw does suggest overfeed. I would reduce your ppm and essentially cancel nitrogen while preserving potassium. WW traditionally hates high PPM. cn

kk ill lower it. Thanks for the help!