Reef Kalkwasser, calcium hydroxide , Lime water. Hydrated lime.

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Kalkwasser 98.7%. Kalkwasser is a solution made by dissolving Calcium Hydroxide in water. Kalkwasser contains no other ions that would otherwise cause an imbalance in the water chemistry. The solution however is highly reactive with CO2 in the air forming insoluble calcium carbonate.

10.33 GBP