Kalkwasser Stirrer 1000 by AquaMedic. **** PRODUCT MANUAL **** Simple and reliable way to add kalkwasser to your aquarium. Kalkwasser might be old-school but these uniquely “revolutionary” stirrers bring the legendary calcium and alkalinity solution into the new millennium. It would not be overstating things to say that kalkwasser has enormous benefits for captive reef aquariums. Kalkwasserpowder is an excellent source of calcium, hydroxide ions to buffer alkalinity, an unmatched ability to encourage coralline algae growth, and it precipitates phosphates out of your system water! Why in the world then wouldn’t we all be using it? Primarily it is the mess and hassle of preparing it in small batches, for use as top-off water, which eventually becomes disheartening. The new Kalkwasser Stirrer delivers the freshest possible kalkwasser solution, on-demand, in line with your automated top off system, like the Aqua Medic Niveaumat. And it does this for up to two weeks with no mess, no hassles, and no problems. The gentle stirring action is perfectly designed to mix incoming top-off water directly into the gently spinning slurry of undissolved Kalkwasserpowder at the bottom of the Kalkwasser Stirrer’s reaction chamber. Above the slurry, the top-off water rises into a fresh, clear volume of saturated kalkwasser solution where it is pulled, as needed, into your reef tank. Now there is no excuse not to take advantage of all the benefits that come with dosing kalkwasser. The Kalkwasser Stirrer is a must have and partners beautifully with an Aqua Medic Calcium reactor to deliver extraordinary results in even the most demanding SPS coral displays.1 lb. of kalkwasser powder included. KS-1000 Specifications: - Reactor Diameter 4.3" - Total Height: 20" - Recommended for tanks up to 400gal.