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Dosing
Kalkwasser Reactor
A stirred chamber dissolving calcium hydroxide into RODI water - the classic method of supplementing calcium and alkalinity in reef tanks.
Price: Premium
For: Saltwater $200-$1,000
📖 Overview
Kalkwasser ("limewater") is a saturated solution of calcium hydroxide in RODI water. Dosed into a reef tank slowly (typically via ATO evaporation replacement), it replenishes calcium and alkalinity simultaneously and precipitates excess phosphate. A kalkwasser reactor keeps the solution mixed and saturated for continuous dosing.