teeny tiny mysid shrimp (maybe)

[asylumdown]

well sweet! Now that I'm thinking about it, for the first 8ish months the tank was running I was using herbies, so there were no standpipes in my overflows and nothing built up at the bottom of it because everything just got sucked down in to a filter sock. Now that there's Durso standpipes in there the overflows are starting to act like something of a refugium. That's probably why I didn't notice them last December, there had only been standpipes in there for a month by then.