Muriatic acid / hydrochloric acid has worked for me.
Christopher A. Young
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I've never found CLR to work that great on heavier deposits of mineral
buildup. What's better?
Try "LemiShine" for Washing Machines, Dishwashers, Disposals. I don't
know what is in it as I don't see an ingredient list. My dishwasher
was really cruddy and nothing I tried including the real TSP wouldn't
touch it. One dose of lemishine and it was showroom clean. Wal Mart
had it in their cleaners section. Small boxbox
After reading about, and then trying, readily available pool grade
muriatic acid; I'm convinced the only way to go!
About $5 per gal at HD, beats CLR which was like nothing, a total
waste of time and money
Muriatic acid was intantly, then didn't have to do again for about a
month. Keeps everything looking like new.
Muriatic acid is hydrochloric acid at about a 25% concentration.
Any janitorial supply store will sell GELLED hydrochloric acid at a 12
to 17 percent concentration for cleaning toilets. Just ask for a
hydrochloric acid based toilet bowl cleaner.
The toilet bowl cleaner will come in a quart size bottle and the fact
that it's gelled will make it stick better to smooth and vertical
surfaces. It'll take longer to work because it's half the strength, but
it's also not quite as hazardous to work with.
Give Lemi-Shine a try.
Available at most grocery stores on the dishwasher detergent isle.
It's basically citric acid ~$4 per pkg (10 oz)
I use it to remove & control hard water deposits in dishwashers.
And as an occasional rinise (~1 month) aid.
Be forewarned.... it will remove (over time) artwork on some glassware
or coffee cups. :(
More aggressive than CLR less than pool acid.
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