First turn off the water (the shutoff valve should be behind the toilet on the floor or wall). Then flush the toilet, which will drain the water from the tank but leave enough in the bowl and trap so that sewer gases won't escape into the house. When you return, turn on the water and give the tank time to refill.
Answers
February 3, 20126 found this helpful
Use a Pumice Stone
Just go to a pool supply store, or a hardware store like Lowes or True Value and ask for a pumice stone. Price is about two dollars. That is a volcanic stone made for the purpose of removing hard water or any other difficult stains from ceramic or porcelain surfaces. People clean tiles around swimming pools with them. They are used in antique restoration. All that is needed to remove stains is to rub it over the stain and stain is gone. No harm, easy, safe, cheap, and fast. You will be happy to have found this product.
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February 5, 20121 found this helpful
Lime Away
Lime Away Toilet Bowl cleaner! It is fairly new and in a container shaped like all the other toilet bowl cleaners. It is awesome! It also removed hard water buildup from sinks, faucets and tubs. Be careful, it's really strong and can discolor some metals. This is also the only thing that will clean a glass shower door, just the glass. I just love it! I live in Central TX and the hard water buildup here is awful! It is currently only available in our HEB grocery stores.
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April 3, 20160 found this helpful
I had black mineral stains on three toilet bowls due to the flapper not making a good seal. Replace all three flappers and used 320 and 600 grit wet/dry sandpaper. The sandpaper did the trick. good luck.