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Kalkwasser Powder, Bulk 1 Lb

Product #AD-CAAC-0450-25


Availability: In stock

Description: Kalkwasser 1 lb. Bulk Kalkwasser is pure and safe for even the most delicate reef aquariums. Mix with RO water to make a great top-off solution that will establish rich coraline algae growth.
Brand: Custom Aquatic


Product Information




Kalkwasser 1 lb. Bulk Kalkwasser (Calcium Hydroxide)

Bulk Kalkwasser (Calcium Hydroxide)is pure and safe for the most delicate reef aquariums. Mix with reverse osmosis water to make a great top-off solution that will establish rich coraline algae growth and help to maintain a high pH.

In the reef aquarium hobby for adding bio-available calcium in solution for calcium-using animals such as algae, snails, hard tube worms, and Corals (often referred to as Kalkwasser mix), and also to increase the alkalinity of the water.

We recommend using Calcium Hydroxide i.e. Kalkwasser in conjunction with our Calcium Chloride in most saltwater aquaculture systems. The main benefit of using Kalkwasser is that it helps to maintain the pH values with a side benefit of calcium.

Even the most inexperienced hobbyist can easily use our Kalkwasser with ease.

Kalkwasser is the same as the original European Method that has never been equaled for calcium addition to a marine tank! Kalkwasser is extremely beneficial for corals, coralline algae and many reef inhabitants. It also helps raise the pH level, which is needed in a marine and reef environment. Kalkwasser is best introduced in the evening since pH levels vary throughout the day, measuring their lowest in the morning.

Adding Kalkwasser in the evening will therefore have less influence in the beginning and helps the system to adjust better and to avoid possible pH shocks (as in a to sudden pH increase).

Our Kalkwasser is extremely pure and meets American Water Works and Water Chemicals Codex Specifications. This means it's pure enough to be used in low-levels as potable water additive by water municipalities. The best way to introduce Kalkwasser is as top off water for the aquarium. Dosage: Figure out how much water evaporation your system has in a 24 hour period. Start out adding 1 teaspoon of Kalkwasser per gallon of RO/DI filtered water and use the clear liquid for your top-off water daily. Monitor your pH, calcium and magnesium values and adjust accordingly.


  • Weight: 1 lb
  • Height: 8 in
  • Width: 5 in
  • Depth: 4.9 in
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AD-CAAC-0450-25

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