Two Little Fishies Kalkwasser Powder 500 g

Two Little Fishies Kalkwasser is a high-purity calcium hydroxide powder designed to maintain proper calcium and alkalinity levels in marine/reef aquariums. When mixed with RO/DI water, it creates kalkwasser (limewater) that supports healthy coral growth, strong skeletal development, and stable pH. It also precipitates phosphate from the water and thus promotes a cleaner, healthier aquarium for growing corals, clams, and calcareous algae.

This kalkwasser is suitable for high-demand marine/reef systems, particularly SPS-dominant tanks. It is compatible with automatic top-off systems, kalk reactors, and controlled drip dosing. Due to its high purity and low impurity content, it minimizes unwanted contaminants and supports consistent coral calcification.

• Key Aspects of Two Little Fishies Kalkwasser: 

1. Kalkwasser maintains calcium directly and alkalinity indirectly in a balanced, cost-effective manner.

2. It is a high-pH solution, which helps stabilize pH in salt water tanks struggling with low levels.

3. It should never be added directly to the tank; it must be dissolved in RO/DI water, typically at a rate of 1 teaspoon per 3.78 Liters, and dripped slowly to avoid large pH spikes.

4. It does not reload magnesium and requires consistent, slow dosing to prevent precipitation.

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