Calcite Corosex® Filter Cartridge


Clack Corosex® is a specially processed hard, bead-like magnesia, adapted for use in filters to neutralize acidity by increasing the pH value.

Filtration Process

By neutralizing the free carbon dioxide in water, Corosex® can correct acidic water conditions and render it less corrosive. Corosex®, being a highly reactive magnesium oxide, is used most effectively where pH correction is substantial or high flow conditions are in use.

pH correction and media consumption are affected by a number of water chemical variables. Being soluble to acidity, Corosex® will slowly dissolve and will need to be replenished periodically.

  • High degree of efficiency allowing for a high flow rate.
  • High capacity allowing less chemical usage.


CompositionMgO 97% min
Effective size1.4 mm
Mesh size6 x 16