When carbon dioxide accumulates in the air in closed buildings, the pH of an aquarium won't stay up. We have the solution: it’s called CDX, a Carbon Dioxide adsorption system. Simply install CDX in our PhosBan reactor and connect it to the air intake of a protein skimmer, using a length of hose and our CDX adaptor to make the connection. The CO2-free air entering the protein skimmer soaks up excess CO2 dissolved in the aquarium water and the aquarium’s pH rises. Packaged in 750 ml jar or 3 L bucket.
