Yes, they look better now, you will get 5000 lumens out of each bulb, you would need 18 of those lamps to equal 1x 600watt sunmaster hps.

You can grow weed just about anywhere except a tent built specifically for that purpose, it is insane I know. Welcome to the world of chinese knock offs!
I googled polamer and I am pretty sure that it is the black nylon stuff on the outside, not the white reflective surface on the inside, so only by the recovery photos i would say its pvc.
On the upside, if you had a hid lamp in there the heat would have released more poison and your plants would be dead by now, so I guess you got lucky?????

Stick to the feeding schedule, and givem another couple of weeks of recovery and you should be good to go.

Subzero.