Simplify & automate the addition of calcium hydroxide with the IceCap Kalk Mixer! The IceCap Kalk Mixer is a dedicated reactor for mixing calcium hydroxide (Kalkwasser) solution to ensure maximum concentration with each dose to your aquarium and eliminates the need for frequent manual mixing. A clever magnetic mixer means no more pesky powerheads to clean and replace frequently. The intelligent design makes maintenance a breeze and the slim profile allows for easy placement under your tank and integration with your existing ATO system. Features Adjustable speed magnetic mixer Solid PVC and acrylic construction Compact profile easily fits under your tank Reactor vessel detaches from base for easy maintenance Push-fit tubing connectors Convenient quick-fill cap for mess free Kalkwasser addition Sealed airtight environment preserves solution potency Gravity drain design ensures reliable performance Benefits Using Kalkwasser to supplement the aquarium with calcium and carbonates is one of the most efficient and economic methods and has been used successfully on reef aquariums for many years. The Kalkwasser powder is relatively inexpensive, is super concentrated and can simply be mixed into your top-off water. Additionally, the elevated pH of the resulting kalkwasser solution and CO2 reducing properties help to maintain a more desirable and stable pH of 8.3 inside your tank.