I wanted to update on the mille for everyone. So, after testing my alk for a few days to see what the swing is, I was having a small .5 ppm swing, which I corrected for I believe. I don't think this was the problem, as that is not that much. I happened to be walking past the tank and noticed my possum wrasse was hovering below the mille and was about to strike. When it did, it grabbed a white blob off the bottom of the mille and spit it out in the water to eat it. I took the mille off the rock and gave it an iodine bath (this is all I have at the moment). About 5 flatworms came off the mille. There was no bit marks on the mille, so I am not sure if there were AEFW, but they were at least annoying the mille. I will update on how the colony recovers.