It looks like it may be a form of nutrient lock-out due to unmonitored pH...pH is extremely important man, and if you don't find some way to fix it, you're more than likely going to lose her. Good Luck!
I've seen something like this before...This guy would surround individual cfl's with mesh so he can place them directly into the canopy without fear of burning his girls!
You got bud worms!? Watch out man, those suckers can ruin a crop! Just try to carefully inspect your girl as much as you can!
Otherwise, she's looking fantastic! But you got one hell of a trimming job if you're gonna be doin' it by yourself!
It's a plausible idea...not the most conventional though. HPS lights usually need to be at least a foot away from the tops of your plants, or you could risk burning them, especially with an open reflector, and a PC case doesn't really have much space height-wise.
How about using the PC case as...
If stealth is not an issue, why not just build a grow box out of wood or something...Build something with a little more space for your ladies. Make the most out of your light.
I know what you mean man. My setup is only about half that size, and it still took me like 2 1/2 weeks to get it up and running! But if there's one thing i learned about designing and building grow rooms, it's that your work will almost never be done! There's always gonna be new ideas poppin'...
Use any green light, even those green party cfl's...Actually those will do good for your space, they're pretty bright, and they'll have no affect on your plants. The green light is reflected off the plant rather than absorbed, that's why the leaves are green.