So, I'm pretty much done with my drama of this thread:

http://www.poolforum.com/pf2/showthr...hlight=mystery

This morning:
FC = 12ppm
pH -- Not accurate due to high chlorine
TA = 120
CH = 240

But I've still got these persistant dark stains!! They do not brush away, so I don't know if they're algae or metal.

http://imageshack.us/photo/my-images...105071041.jpg/