Alert high water hardness rating! 43°F in Brussels, capital of Europe in a renovated apartment building near the Rogier International Centre and the famous Rue Neuve. The increase of limestone in the public network water boilers havoc with micro battery, the coil water heaters, electric hot water tanks, thermodynamic water heaters, coffee machines, coffee machines, the fittings, solar water heaters, etc. The cost of damage caused by tartar allourdissait periodically. Therefore, what is more normal to act without delay. Fortunately the old galvanized iron pipes were replaced ...