Carbon Dioxide Media
Carbon Dioxide in a saltwater aquarium can drive the pH lower than what is ideal for your reef tank. Using a CO2 Scrubber or Carbon Dioxide Scrubber you can actually remove the Carbon Dioxide from the air entering into your protein skimmer. By filling a scrubber reactor with the CO2 Absorbent Media and connecting the output of the reactor to the airline for your protein skimmer, you will see an increase in your aquariums pH level. The media does need to be changed and depending on the CO2 concentrations it could be anywhere from a week to a month before the media is exhausted and needs to be replaced.