White marks on side of RV where hot water tank drains

[twaynedaniel]

Hi All - I have tried to remove the white marks left by drain water from the hot water tank but no luck. I even tried vinegar, still no luck. Any ideas?

[sleepyT]

Originally Posted by twaynedaniel

Hi All - I have tried to remove the white marks left by drain water from the hot water tank but no luck. I even tried vinegar, still no luck. Any ideas?

Could it be lime deposits...

[Pro BSer]

Most likely the white streaks are simply hard water scale deposits. Use a mild acid (test first in an inconspicuous location to make sure it won't damage painted or decayed surfaces.

[mark5w]

Check out LimeAway. Read the label before you buy.

[Chiveon]

CLR works as well. Maybe it's only in Canada. Can be bought at home hardware centers

[twaynedaniel]

Could be lime. I would've thought the vinegar would have removed it. Thanks.