Tank Haze NEED HELP

[GurpM]

I received his tank with some haze on the glass
So far I have tried to clean it with a scrub pad, viniger, bar keepers friend, Cerium Oxide and clr
dont know what to do from here

 

[albano]

Can't tell from pics, but if it's from coraline algae that was allowed to stay, the glass is (IMO) permanently etched...

 

[marrone]

Try using a Razor blade, and if you can't get it off with that then, like Alfie posted, it's most likely coraline that was allow to grow on the glass and it probably etched into it now.

 

[GurpM]

I don't think it's algae there were spots on the side with it that came off relatively easy. The guy I got it from said he cleaned part of the tank with vinegar and a magic eraser

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[GurpM]

The glass is smooth to the touch

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[Mattl22]

Try a new razor blade


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