Please help me with these waterline stains!

[WhiteTailFish]

Hi everyone. I'm wondering if some has a tip to help me get these awful stains that I have around the rim of my Red Sea Reefer that I bought used few months back. I originally used white vinegar water mix and a blade to clean the inside of the tank and I was able to get most of the algea stains off with the blade but I haven't gotten anywhere with these stains near the waterline.
The camera flash make it look worse than it is IRL but it's still definitly noticeable if you look at the tank for long enough under normal light.
Thanks in advance!

 

[motortrendz]

Maybe some CLR or a magic eraser?

 

[Scotty Buttons]

Try a flat edge razor blade

 

[Mikedawg]

Or citric acid maybe; hopefully, your glass isn't etched

 

[hybridazn]

A lot of times once they get that bad there isn't much you can do. That looks etched pretty bad.

 

[WhiteTailFish]

Maybe some CLR or a magic eraser?

Tried magic eraser but not CLR. Kinda scared of using that. Would I apply it directly or dilute it?

 

[motortrendz]

I'd spray it right on it if you can lay that side down and let is soak. Use a clean new razor to get it off. then clean it with soap and water let it dry completely. You could always do a vinigar wipe after. But soap and water is fine.

 

[WhiteTailFish]

Try a flat edge razor blade

I used the blade on the Kent kit that I have, is there something better?

 

[merereef]

I have this same problem... tried magic eraser etc nothing worked

 

[WhiteTailFish]

Or citric acid maybe; hopefully, your glass isn't etched

Etched...ugh really? What would cause that?

 

[WhiteTailFish]

I'd spray it right on it if you can lay that side down and let is soak. Use a clean new razor to get it off. then clean it with soap and water let it dry completely. You could always do a vinigar wipe after. But soap and water is fine.

Ok I'll try that tomorrow. Thanks!

 

[WhiteTailFish]

I have this same problem... tried magic eraser etc nothing worked

Man that sucks...is it as noticeable when wet with aquarium water?

 

[EricHop]

I used a magic eraser and vinegar water mix, seemed to help alot. Still doesn't work 100% though.

 

[marspeed]

You can buff that out with glass polish

 

[merereef]

You can buff that out with glass polish

Need to try that!!

 

[Old Fritz]

When I first started working at Petco there was calcium build up on tanks that was probably years old and ph down worked for me

 

[Jon Fishman]

I got a used tank, and I did acetone and razor blade. Looked new afterwards

 

[GlassMunky]

Etched...ugh really? What would cause that?

Water alone can’t etch glass. It takes a STRONG acid to etch glass, usually HF.

a good soak in some CLR should do the trick, it’s just hard water build up.

 

[mpatient]

Bar Keepers Friend. Make a thin paste and let it sit for 15 minutes are so. Turning its side prevents the past from sliding from target area. Wipe off. Then a clean straight razor blade and a glass polish disc on a grinder or power drill. I had an old Oceanic 110g that had years of water deposits. I worked on it in sections and it took A LOT of elbow grease. In the end, the tank glass came out like new!

 

[ahiggins]

Try a flat edge razor blade

+1 works for me when I notice it