-Aquafx CO2 Media can quickly deliver the best results by raising the pH in your aquarium through the reduction of excess dissolved carbon dioxide. We are constantly breathing carbon dioxide (CO2) into the air, and in our homes this can quickly build up and begin to dissolve into the water in our aquariums. The result is carbonic acid, which depresses the pH. This is actually the primary cause of low pH in most aquariums negatively impacting coral growth and overall health.
