Anyone suggest limescale remover that works?

Discussion in 'General Chat' started by bernado, May 6, 2016.

  1. bernado

    bernado
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    I live in a hard water area and our toilet pan is a limescale horror (pictures definitely not included!).
    Before anyone starts pointing fingers yes I do actually clean it with supposedly decent branded stuff, leaving it over night etc. I've tried limescale removal tablets which work but only the surface they are in contact with, leaving a nice clean scale free 1 inch circle.

    Possibly the dullest thread ever but any ideas?
     
  2. craig1912

    craig1912
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  3. MrSossidge

    MrSossidge
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    I think you need to pad the toilet out with a cloth as well so that the remover is in contact with the scale above the water line. But leave it to soak for longer than you would normally so it has chance to penetrate.
     
  4. bernado

    bernado
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    Thanks chaps, a glamerous weekend for me by the look of it!
     
  5. pandemic

    pandemic
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    Citric acid is cheap, a kilo for a fiver. You can pour in boiling water followed by a decent amount of citric acid, leave for half an hour, scrub and flush.
     
  6. Aerojon

    Aerojon
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    this works..
     

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  7. Ataripower

    Ataripower
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    Kill Rock is awesome, see Amazon,
     
  8. Toko Black

    Toko Black
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    If you are feeling REALLY brave and quite a bit reckless, you could buy some 92% sulphuric acid - saw some on sale in Wilcos not that long ago.
    That will remove limescale 'better' than anything else you could get. I say better in terms of pure removal of the stuff* without causing dangerous toxic gases and damage to ceramics, but you HAVE to factor in the safety - rubber gloves, goggles, absolutely NO splashes.

    Kilrock K is a highly recommened balance between really strong, dangerous chemicals and lightweight but useless for heavier jobs basic limescale products - It's based around formic acid ... the stuff ants make. - as mentioned above by Ataripower
     
    Last edited: May 6, 2016
  9. IronGiant

    IronGiant
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  10. bernado

    bernado
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    This is what I love about this forum, where else could you get advice about bog cleaning and plasma panel calibration?
     
  11. IronGiant

    IronGiant
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    Just don't get you advice muddled up. Pouring sulphuric acid into the vents of your plasma might make your blacks blacker, but not in the way you want.
     
  12. k17chy

    k17chy
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    Full bottle of coca cola and leave over night.
     
  13. Trollslayer

    Trollslayer
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    With the same product!
     
  14. bernado

    bernado
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    Not to mention screen burn
     
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  15. Toko Black

    Toko Black
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    It's all about how it is deposited with Sulphuric acid - if you tried to dissolve blocks or lumps of calcium carbonate you would just end up with slightly smaller gypsum coated blocks.
    If it's a thinish layer a millimeter or so thick, it usually would eat through it fast enough before a layer of gypsum could form.

    ..... I've messed about with various acids and alkalies like sodium hydroxide etc at home in various little 'experiements' for my own amusement and experience ;)
     
  16. Wahreo

    Wahreo
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    Vinegar
     
  17. mitre

    mitre
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  18. bernado

    bernado
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    Some good pointers here, I think the secret is going to be removing as much water as I can before soaking it with whatever potion I use.
    On the downside, I'm having trouble reconciling the fact I'm posting on a public forum about toilet limescale on a Saturday night:blush:
     
  19. amcluesent

    amcluesent
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    Brick and mortar cleaner from one of the DIY 'sheds'. It's Muriatic Acid, a.k.a. Hydrochloric acid
     
  20. RMCF

    RMCF
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    I live in a very hard water area, and got so fed up with limescale I had to bite the bullet and buy a water softening system.
     
  21. Toko Black

    Toko Black
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    You need to be VERY careful with hydrochloric acid on things like limescale - not only is it dangerous as an acid in and of itself, but the reaction releases chlorine gas which is of course very dangerous.
    Especially inside enclosed spaces like bathrooms ...
     
  22. IronGiant

    IronGiant
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    CaCO3(s) + 2HCl(aq)[​IMG] CaCl2(aq) + CO2(g) + H2O(l)

    It does? :)

    Don't forget, Harpic is just dilute Hydrochloric acid. I do agree though, use conc HCl in a well ventilated space :) just in case you do get some side reactions going on.
     
  23. huntere

    huntere
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    Guys, i would use HCl over H2SO4 any day. Adding 92% sulphuric to water will get hot. I can see thermal cracking of bowl happening. Also added too fast and a faceful of dilute sulphuric.
    If weak acids arent enough (eg vinegar) look for sulphamic acid.
     
  24. Toko Black

    Toko Black
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    Sorry - I wasn't at all clear, I am not sticking to pure chemistry as it's more a generalised warning against using potentially dangerous chemicals in non laboratory/professional circumstances ie normal people using it in a bathroom. If it was a controlled experiement and it was the pure reaction it's mainly the risk of temperature exceeding boiling points and releasing hydrogren chloride gas, but the potential byproducts* of having traces of bleach in the toilet from rim/tank blocks, strong lingering bleach products etc when using concentrated HCl in a real world toilet by the uninitiated.

    * as you warned about.

    ps I am not a chemist, but I did pass A level chemistry even after nearly getting thrown out for being naughty with acids in the organic chemistry module ;)
    Ironically due to running out of my proton pump inhibitor gastric tablets yesterday and late last night conducted an impromptue hydrochloric acid released into the toilet experiement :p
     
  25. IronGiant

    IronGiant
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    Liking that post seems inappropriate given how it finished :), I'll hypothetically like the first half and :( the last part.

    Was the "experiment" a success? :D
     
  26. Toko Black

    Toko Black
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    I'm used to it by now tbh ;)
     

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