Polishing Aquarium Glass

[Denzil]

So it seems that my girlfriend's 210 has some glass staining or corrosion that is seemingly difficult to remove. I've tried polishing it with a rotary machine with a glass polishing pad and compound and haven't had much luck. I've also tried auto detailing clay as well as Bar Keeper's Friend. She has already tried white distilled vinegar and CLR with plastic wrap to increase immersion/saturation time on the vertical panels. I'm just about short of ideas minus using really find sandpaper. You can check out the pictures below to see what we're dealing with.

http://smu.gs/12ruXKW

Does anyone have any other ideas? We don't expect to get the glass completely perfect (although that would be awesome) but we definitely want to minimize this imperfection so that it doesn't affect viewing clarity.

Thanks in advance!

 

[dave.m]

Have you tried refilling the tank with freshwater as a test? A lot of imperfections in the glass will disappear and become barely noticeable with water in the tank.

Dave.M