Hey Phase, great idea for a thread.
I'm also growing in a pc case. I think it's 21x18x8, giving 0.99sq ft of growspace. I'm using a 100w CMH bulb which outputs 9,500 lumens of mixed spectrum light with a peak at 3000k. The grow is perpetual and uses the 12/12 from seed method with about 3 weeks between plantings.
There's 2x92mm and an 80mm fan all acting as exhausts with another 80mm and 2x70mm fans as intakes, all fans are adjustable between 6/9/12v to allow me to grow year round. To help with cooling I have a 2mm polycarbonate sheet between the canopy and the light. Potato chip/ crisp packets are used to make the walls reflective and odour control is a strip of activated carbon foam over the exhausts.
The plants are in coco and I'm using GH Flora Nova nutes, temps are 65 and 78 ATM.
I've had some great results with NL recently but right now I have 4 Violator Kush on the go. I just posted this in my journal but it's how they looked 2 days ago.