Introduction

Corosex media can be mixed with Calcium Carbonate media for neutralizing low pH water. It can treat water with pH being as low as 5.3. Upflow systems are recommended unless the water already contains hardness. A minimum of 50% mix of calcite or higher concentration is recommended to prevent cementing.

How it works 

By neutralizing free carbon dioxide in water, Corosex media can correct “red water” conditions and prevent corrosion. The media is magnesium oxide. Corosex is best when combined with calcium (calcite). The media is slowly dissolved, so replenishment will be required. A gravel support bed is recommended in standard vertical tanks. Best mixing combinations with Calcite are 90% Calcite 10% Corosex, or 80% Calcite 20% Corosex. 50/50 mix is also possible.

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