My Cart (0 items)
Click on image to zoom
View full size image

More Views

  • Quick Overview

Dosing with BRS Bulk Kalkwasser is one of the very few proven, effective methods to add calcium and alkalinity with a single product while maintaining pH at an affordable price. Commonly used in conjunction with auto top off systems. BRS Bulk Kalkwasser is produced with the highest quality material available to the aquarium industry.


  1. Before dosing Kalkwasser, it is necessary to test and raise calcium and alkalinity levels to their correct levels. We suggest using Calcium Chloride and Sodium Bicarbonate. Kalkwasser should not be used for this because, in large doses, it will significantly raise pH.
  2. Use the BRS Reef Calculator to determine proper bicarbonate and calcium chloride amounts to adjust alkalinity and calcium.
  3. Maintain new levels with Kalkwasser using an Auto Top Off System.

See Full Details for more information on Kalkwasser, Calcium Chloride, Sodium Bicarbonate and Magnesium Mix and their effects on your tank.More

BRS Bulk Kalkwasser (Calcium Hydroxide) Aquarium Supplement

Orders over
Ship Free
View Reward
Points Below What's this?
Ships tomorrow

Choose a size

1/2 Gallon
SKU: 000242
Earn 8 Reward Points
Buy 3+ and save 11%
1 Gallon
SKU: 000241
Earn 12 Reward Points
Buy 3+ and save 11%
5 Gallon
SKU: 000245
Earn 54 Reward Points
Buy 3+ and save 10%


Please wait...