AquaStar 1 – tough on limescale For maintaining installations and for water that tastes great. Limescale deposits in water installations not only give water a musty taste, but over time they also clog up valves and tap aerators in hot water generators and provide bacteria with an excellent breeding environment. AquaStar 1 is based on natural citric acid and is effective at eliminating limescale. AquaStar 2 – shows no mercy to germs. For a germ-free water installation. Tanks, lines and pumps that are left uncleaned are subject to a build-up of bacteria and algae, particularly over long periods where they are not in use. This biofilm represents the perfect breeding ground for germs. AquaStar 2 unleashes its two-phase action using active oxygen and silver: the oxygen dissolves the biofilm, whilst the silver ions kill any bacteria lurking in it.