Horrible Hard Water Stains

[Barbz99]

I bought a 55 gallon tank off Cragslist and it has horrible hard water stains..they can not be removed with vinegar or vinegar with baking soda. I have also tried using a knife to scrap it away...nothing. They seem to be very old stains. I was wondering if it would even be worth it to get chemicals to clean the glass or if it is not worth it. Do you know of any chemicals that remove stains that are very old? Thanks
~Zac


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[Barbz99]

B u m p


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[Barbz99]

B u m p


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[tangs27]

I think the simple green or clean can't remember should help remove them. I know CLR would remove the stains but I doubt it's safe to use in an aquarium.

 

[Sparkli2]

What about that CLR stuff. It says it gets rid of calcium lime and rust

 

[treemanone2003]

Simple green works fairly well with a lot of elbow grease. I found by accident that chicken grease does wonders. Had some on my fingers while hosting a good party and had to rearrange the garage at the same time. Was amazed. Another accidental find was (sounds bad but again, works like a charm) is saliva. Ever heard of a "spit shine" ? There's a reason that came about.


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[troyd75826]

Straight vinegar will work best


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