Jesse, you are kinda right, I got you interested in it through our conversation. I got thinking last night, why did I dig into it back then, well I just wanted to "lessen the 24hr pH swing" if you will. My pH would swing from 7.8/7.9 at night up to about 8.2 during the day, so I dug into it a bit and found this method of using the outside air. By adding the new air to my skimmer my daily swing lessened and my average pH cycle shifted to the higher side as well. My daily cycle now is about 8.17 to 8.35 or so, sometimes 8.45 on a good day. Interesting information.