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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.