Two Little Fishies CO2 Absorption Media 750ml

CDX, carbon dioxide adsorption media. Sometimes the carbon dioxide that accumulates in the air in closed buildings causes the pH of an aquarium to be low. 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 so the aquarium?s pH rises.