How to remove limescale
Lime scale is that crusty white film that often occurs on taps and in bathtubs, toilets and appliances. It is the result of hard water leaving behind alkaline mineral deposits which can over time lead to soap scum buildup and stains in tubs and sinks, lack of shine and eventual peeling of chrome, and inefficiency in appliances such as kettles. But keeping it at bay means following just a few simple strategies. (Here's a hint: Make sure you have a big bottle of vinegar on hand.)
Mix a solution of equal parts white vinegar and sodium. Drain the toilet bowl and pour the solution in. Let it set for two hours, and then scrub with a toilet brush. Another method is to pour three cups of undiluted vinegar into the full toilet bowl and scrub it clean. Adding three cups of undiluted vinegar to the toilet tank will help keep it clean as well.