Cleaning Glass on Old Tank

[Werbo]

Ok. Have an old 120 G that I am cleaning so I have a fresh start. Scrapped all the coraline off with a razor and washed to glass multiple times with vinegar, then Windex but there is still thin film that I cannot get off.
Has anybody had success cleaning an old tank and getting it as clean as new? How did you get the thin film off? Any ideas are appreciated.
Thanks, Tyler

[eli@fijireefrock.com]

try hydrocloric or meriatic acid very bad for the lungs and skin take precaution and wear gloves.i have tried both and work great,try in a very ventilated area.
you could find either at canadian tire or swimming pool cleaning supplier.

[kodak]

Hmmm.. maybe a quick polish with an electric buffer ...

[blueyota]

I have the same film on my glass and cannot get rid of it its on the out side ...it was a used tank when i got it and it was on there already i have used every thing and the only thing so far that will do any thing is CLR but still leaves some spots that will not come clean if you find anything that works let me know please ....Thanks

[mark]

I've used muriatic acid, works great

[eli@fijireefrock.com]

try my method and you wont regret it spotless..squeeeeeeky cleaeaeean.lol

[Werbo]

Great. I'll give it a try and then rinse the glass to remove any "acidic" residue.

[Werbo]

So picked up the muriatic acid and gave it a try. I applied it with a sponge and then wipped it off with a paper towel withour letting the acid dry.
NO LUCK.
Should I let the acid dry? Any application tips would be appreciated.
Thanks,
Tyler

[Delphinus]

How is the muriatic acid on the silicone seams?? Do you have to reseal the tank if you do that? Or is it inert on the silicone?

[0sprey]

I'd let the stuff soak for a little while... don't wipe it off right away.