They're actually blind, it
Sunbleach that bitch out in the sun for a month or 2 and you'll
If you let it sit out in the sun for a month or 2 you could bleach it white, you don't really want to scrub it with a brush, it looks pretty brittle and if it is it might be from an infant that fell from...
I live in ca and summer time gets really brutal, I've constantly run a 10000btu Ac unit. To compensate for all that heat but I got 3 1000w hps I'm sure 600w shouldn't be that big of a deal for you