On Monday, April 8, 2013 11:44:11 AM UTC-6, notbob wrote:
On 2013-04-08, dadiOH wrote:



The roughness is from lime deposits which may be further stained by iron.



Definitely deposits. I got a lot removed with the Polident, but still

two heavy deposits. As a goof, I tried lightly scraping with a

screwdriver. Chunks of brown deposit broke free! I'll continue along

this line, but will try something that won't scratch the porcelain

glaze.



For the bottom of the bowl, shut off the water supply to it and flush so

that there is minimal water left;



I discovered a neat trick to help further empty the bowl. After

shutting off the water to tank and flushing, rapidly dump a gal jug of

water into the bowl, all at once if possible, and from several feet

above the bowl. Inertia of the falling jug water will remove even

more water, right down to jes above the water seal level, in my case.



Your long term solution is to soften the water. That will solve the lime

problem.....



CO water is notoriously soft. Our's is a little less soft than most

of the state, but still fairly soft water. I haven't bought bottled

water since I moved here. I think the deposits are calcium deposits

from human urine, the stain from the yellow in urine.



nb

Iron-Out works really well. I use it all the time.