I pretty much never do anything in my fuge except turn the Chaeto over every Sunday night. I do have a minimal clean up crew in there (some intentional and some just "Appear"). I have several cerith snails, some Nassarius Snails (good sand stirrers) and of course bristle worms.
For the most part the less you mess with your refugium the better off it is. It does need some occasional attention but for the most part just observe and enjoy