Spotted Berghia again tonight in main display, same side (top left) but also spotted a different and much larger one in the refugium.

I am wondering what could be causing their increased activity as I rarely ever see them and today I've seen 4-6 of them.

Spotted a Berghia in the main display (left side top) 2nd day in a row today, and another inside the refugium @ 12:25pm

Spotted one Berghia Nudibranch today in the display refugium.

Skimmer has been running like complete junk for the past few days, it's not visibly dirty but going to take it out and do an acid bath today to get it going proper again.