wrote in message
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On Wednesday, 21 October 2020 17:53:29 UTC+1, tim... wrote:
"alan_m" wrote in message
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On 06/10/2020 15:32, tim... wrote:
My toilet pan has a stain below the watermark that neither bleach nor
readily available acid (vinegar) will remove

what stronger products are easily available that will remove it?





HG products usually do what they say on the can/bottle

It might have done what it says on the box

but it didn't do what it shows in the picture

my significantly less stained bowl than the one in their pictures is only
about 60% cleansed from one bottle of the stuff

Going to take a second bottle of something to finish the job off

HCl 34% is about as effective as it gets. Nasty fumes, nasty liquid, but
very quick.

The key thing with bog acids is to let them soak overnight.

The problem was that the scale was too thick to dissolve in one of two
applications. Trying to rub it off the top with the scouring pad was
ineffective.

But I solved the problem by soaking it in a weak acid and seeing if that had
weaken the bottom surface, which it had. Gently jabbing at it with a
screwdriver and it flaked off in large lumps.

Would have been better if this had been in the instructions and I would have
saved the second bottle of vinegar.








NT