Dirty bog with limescale at the bottom...

My utility toilet I had planned on replacing because of the state of it from limescale but I absolutely went to town on it over the weekend and it looks good as new.

It was pretty much as bad as it gets, any part under the water line was totally dark brown and round the rim it was shocking too.

Filled the toilet up with just a cheap Aldi toilet cleaner and left it a few hours, then put toilet cleaner soaked pieces of kitchen towel around the rim and left that too.
Got most of it off with a good scrubbing after that, but had to use a wallpaper scraper on the bits around the rims
 
As said. Some really strong acid. Can get it from any source.
Hydrochloric will work well
 
You need a product with hydrochloric acid in. Look at the labels in the supermarket to find out which ones have it and get the strongest concentration.

Once worked as an apprentice in a medical company and used conc. hydrochloric acid to clean up the sinks in the labs - really does the trick!

Nowadays I just the limescale removing bleach products already mentioned in the thread and find them to be pretty effective.
 
Once worked as an apprentice in a medical company and used conc. hydrochloric acid to clean up the sinks in the labs - really does the trick!

Nowadays I just the limescale removing bleach products already mentioned in the thread and find them to be pretty effective.

Just check the label to see if it has hydrochloric acid in, normally 5% eg harpic power plus or similar. Some products labelled limescale remover dont contain acids but bleach which is ineffective, it just whitens the limescale deposits but doesnt desolve it.
 
Depending on how bad it is, you might need to weaken it with a strong acidic product and then go at it with a pumice stone (which is what I had to do, toilet was caked with years of limescale). We got a bottle of "Vanosolve" made by Evans, industrial strength limescale remover. Treat the limescale with that first (needs all the water removed from the bowl or it is useless) and then work at it with a pumice stone.

If it's not too caked than a vanosolve treatment and some elbow grease with the bog brush will help.
 
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