[Anselth]

So if it isn't one thing, it's another. Came back from our meeting today (with my new green shroom, pictures tomorrow, today was too stressful) to find my return spewing air bubbles into the display. It seems there was a leak at the output of the UV sterilizer, which led to the ATo being unable to keep up, and the sump level dropped far enough that air was infiltrating the return. I had to shut the system down and add enough new salt water to fill the sump back to its correct level. Unfortunately now the SG is at 1.023, so I have to do another water change to raise the salinity back to 1.025.