Kalkwasser
/KAHLK-VAS-er/
Calcium hydroxide solution dripped into a reef tank via top-off.
German for 'lime water'. Adds calcium and alkalinity simultaneously while raising pH. Cheapest dosing method on a per-element basis. Limited by evaporation rate.
Recommended
Affiliate linksKalk powder + a two-sensor ATO to drip it. Cheapest dosing setup in the hobby.
Two Little Fishies Kalkwasser (calcium hydroxide) — 2 kgDrip in top-off for cheap Ca + alk + pH boost.View on Amazon →Tunze Osmolator 3155 ATOMid-size ATO with optical + float failsafe.View on Amazon →
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