misty/hazy glass

[KurseD]

i just bought a 30gal at a yard sale ($5) it's in pretty good condition, no cracks or chips, but there is a misty/foggy/hazy substance all over it (kinda like how old acrylic tanks get, but this is glass) i thought it might be some kinda algae that molded on, but it's not coming off. no matter how hard i scrub, it's still there. even went as far as taking a razor to it. i'm thinking of using some kinda chemical, any suggestions on what would be safest?

 

[Oddball]

Sounds like lime deposits. Take a paper towel, ball it up, wet it down with white vinegar, and drop it on a section of the 'milky' glass. Leave it for a half to full hour then remove the towel, wipe with a water wet paper towel, then wipe with a dry towel. If the glass cleans up, do the rest of the tank the same way.

 

[KurseD]

great, i'll try it out. will it harm the fish? thanks for the help man.

 

[Oddball]

It won't harm the fish after it's rinsed off.

Avoid using household cleansers meant to clean hardwater spots or lime buildup. These are caustic chemicals that can permanently etch glass.