Aqua Medic Kalkwasser Stirrer 1000 - For the production of Kalkwasser for saltwater aquaria. The Kalkwasser Stirrer 1000 stirs the kalkwasser so that the calcium carbonate sediment settles at the bottom of the Stirrer while the clear solution of calcium hydroxide is at the outlet where it can be transferred to the tank using the Niveaumat SP3000 (Automatic Top Off Unit with peristaltic pump and float switch)...