I usually find a generous squirt of Harpic overnight, or when going away for the weekend does the trick. If I've been a bit remiss with the Harpic, then the "Kilrock Big K" that's periodically in ALDI does the trick.
Umm.. for reasons of convenience to the plumber, our main bathroom toilet is fed from the cold water soft supply. I would say the scaling is worse than simple limescale and dark grey in colour:-(
>
Coca cola?
For them as is curious (as I was), DS3 is Sulphamic acid (although the MSDS calls it sulphamidic acid, which confused me for exactly as long as it took to google). It's reckoned to dissolve half its own weight of limescale.
About £20 for two kilos, so reasonably economical.
You may find Sainsbury's 'Limescale remover' in a blue bottle a more effective product.
I should hope theres a warning notice applied to the karzi, don't fancy acid walloping my delicate derrière first thing in the morn;!...
HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.