Hey all, I just built this reactor last week, and at first everything seemed great (still does for the most part, especially with CO2 diffusion). My issue is that I keep getting good size bubbles blown out of my spray bar, but I think they're just air and not CO2. I've shaken my Eheim 2213 to ensure no trapped air there and after the first day it was fine. Now, after a few days, I can't seem to shake the bubbles. Also, after a few hours on day one, the thing ran silent. Now I can hear the water running through it from 5-10 feet away. The filter I used is the GE one shown on here from Home Depot that has the valve to purge the air. Tried that numerous times and just doesn't seem to work.